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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnassertedClaimMember" xlink:label="loc_us-gaap_UnassertedClaimMember_27E20C9C06543C822B03F2CD6608E5CD" xlink:type="locator" />
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    <link:label id="lab_msa_CumulativeTraumaMember_10071C783F5BCBEC51FDF2CD6608A18F_terseLabel_en-US" xlink:label="lab_msa_CumulativeTraumaMember_10071C783F5BCBEC51FDF2CD6608A18F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cumulative Trauma</link:label>
    <link:label id="lab_msa_CumulativeTraumaMember_10071C783F5BCBEC51FDF2CD6608A18F_label_en-US" xlink:label="lab_msa_CumulativeTraumaMember_10071C783F5BCBEC51FDF2CD6608A18F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cumulative Trauma [Member]</link:label>
    <link:label id="lab_msa_CumulativeTraumaMember_10071C783F5BCBEC51FDF2CD6608A18F_documentation_en-US" xlink:label="lab_msa_CumulativeTraumaMember_10071C783F5BCBEC51FDF2CD6608A18F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cumulative Trauma [Member]</link:label>
    <link:loc xlink:href="msa-20180331.xsd#msa_CumulativeTraumaMember" xlink:label="loc_msa_CumulativeTraumaMember_10071C783F5BCBEC51FDF2CD6608A18F" xlink:type="locator" />
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    <link:label id="lab_msa_CumulativeTraumaReportedClaimsMember_9DB9A923C7D79CA55573F2CD66081B49_terseLabel_en-US" xlink:label="lab_msa_CumulativeTraumaReportedClaimsMember_9DB9A923C7D79CA55573F2CD66081B49" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cumulative Trauma, Reported Claims</link:label>
    <link:label id="lab_msa_CumulativeTraumaReportedClaimsMember_9DB9A923C7D79CA55573F2CD66081B49_label_en-US" xlink:label="lab_msa_CumulativeTraumaReportedClaimsMember_9DB9A923C7D79CA55573F2CD66081B49" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cumulative Trauma, Reported Claims [Member]</link:label>
    <link:label id="lab_msa_CumulativeTraumaReportedClaimsMember_9DB9A923C7D79CA55573F2CD66081B49_documentation_en-US" xlink:label="lab_msa_CumulativeTraumaReportedClaimsMember_9DB9A923C7D79CA55573F2CD66081B49" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cumulative Trauma, Reported Claims [Member]</link:label>
    <link:loc xlink:href="msa-20180331.xsd#msa_CumulativeTraumaReportedClaimsMember" xlink:label="loc_msa_CumulativeTraumaReportedClaimsMember_9DB9A923C7D79CA55573F2CD66081B49" xlink:type="locator" />
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    <link:label id="lab_msa_ClaimsSettledButNotYetPaidMember_C871D8D0DAF9D29F5535F2CD660862AC_terseLabel_en-US" xlink:label="lab_msa_ClaimsSettledButNotYetPaidMember_C871D8D0DAF9D29F5535F2CD660862AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Claims Settled, But Not Yet Paid</link:label>
    <link:label id="lab_msa_ClaimsSettledButNotYetPaidMember_C871D8D0DAF9D29F5535F2CD660862AC_label_en-US" xlink:label="lab_msa_ClaimsSettledButNotYetPaidMember_C871D8D0DAF9D29F5535F2CD660862AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Claims Settled, But Not Yet Paid [Member]</link:label>
    <link:label id="lab_msa_ClaimsSettledButNotYetPaidMember_C871D8D0DAF9D29F5535F2CD660862AC_documentation_en-US" xlink:label="lab_msa_ClaimsSettledButNotYetPaidMember_C871D8D0DAF9D29F5535F2CD660862AC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Claims Settled, But Not Yet Paid [Member]</link:label>
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    <link:label id="lab_msa_ClaimsAssertedButNotYetResolvedMember_896F9CF734987300FB1EF2CD6609C65D_terseLabel_en-US" xlink:label="lab_msa_ClaimsAssertedButNotYetResolvedMember_896F9CF734987300FB1EF2CD6609C65D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Claims Asserted But Not Yet Resolved</link:label>
    <link:label id="lab_msa_ClaimsAssertedButNotYetResolvedMember_896F9CF734987300FB1EF2CD6609C65D_label_en-US" xlink:label="lab_msa_ClaimsAssertedButNotYetResolvedMember_896F9CF734987300FB1EF2CD6609C65D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Claims Asserted But Not Yet Resolved [Member]</link:label>
    <link:label id="lab_msa_ClaimsAssertedButNotYetResolvedMember_896F9CF734987300FB1EF2CD6609C65D_documentation_en-US" xlink:label="lab_msa_ClaimsAssertedButNotYetResolvedMember_896F9CF734987300FB1EF2CD6609C65D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Claims Asserted But Not Yet Resolved [Member]</link:label>
    <link:loc xlink:href="msa-20180331.xsd#msa_ClaimsAssertedButNotYetResolvedMember" xlink:label="loc_msa_ClaimsAssertedButNotYetResolvedMember_896F9CF734987300FB1EF2CD6609C65D" xlink:type="locator" />
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    <link:label id="lab_msa_UninsuredCumulativeTraumaMember_0D6D90C25F7AE0C6605EF2CD6609AD7D_terseLabel_en-US" xlink:label="lab_msa_UninsuredCumulativeTraumaMember_0D6D90C25F7AE0C6605EF2CD6609AD7D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Uninsured Cumulative Trauma</link:label>
    <link:label id="lab_msa_UninsuredCumulativeTraumaMember_0D6D90C25F7AE0C6605EF2CD6609AD7D_label_en-US" xlink:label="lab_msa_UninsuredCumulativeTraumaMember_0D6D90C25F7AE0C6605EF2CD6609AD7D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Uninsured Cumulative Trauma [Member]</link:label>
    <link:label id="lab_msa_UninsuredCumulativeTraumaMember_0D6D90C25F7AE0C6605EF2CD6609AD7D_documentation_en-US" xlink:label="lab_msa_UninsuredCumulativeTraumaMember_0D6D90C25F7AE0C6605EF2CD6609AD7D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Uninsured cumulative trauma.</link:label>
    <link:loc xlink:href="msa-20180331.xsd#msa_UninsuredCumulativeTraumaMember" xlink:label="loc_msa_UninsuredCumulativeTraumaMember_0D6D90C25F7AE0C6605EF2CD6609AD7D" xlink:type="locator" />
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    <link:label id="lab_msa_PunitiveDamagesMember_E67B15829D357D848156F2CD6609AFD1_terseLabel_en-US" xlink:label="lab_msa_PunitiveDamagesMember_E67B15829D357D848156F2CD6609AFD1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Punitive Damages</link:label>
    <link:label id="lab_msa_PunitiveDamagesMember_E67B15829D357D848156F2CD6609AFD1_label_en-US" xlink:label="lab_msa_PunitiveDamagesMember_E67B15829D357D848156F2CD6609AFD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Punitive Damages [Member]</link:label>
    <link:label id="lab_msa_PunitiveDamagesMember_E67B15829D357D848156F2CD6609AFD1_documentation_en-US" xlink:label="lab_msa_PunitiveDamagesMember_E67B15829D357D848156F2CD6609AFD1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Punitive Damages [Member]</link:label>
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    <link:label id="lab_us-gaap_ProductWarrantyExpense_3615FECD55664FB8AD63F2CD6609B6FB_terseLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyExpense_3615FECD55664FB8AD63F2CD6609B6FB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Product Warranty Expense</link:label>
    <link:label id="lab_us-gaap_ProductWarrantyExpense_3615FECD55664FB8AD63F2CD6609B6FB_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyExpense_3615FECD55664FB8AD63F2CD6609B6FB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product Warranty Expense</link:label>
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    <link:label id="lab_msa_LossContingencyYearsofActivity_F71319F8D230792FACD5F2CD660996DD_terseLabel_en-US" xlink:label="lab_msa_LossContingencyYearsofActivity_F71319F8D230792FACD5F2CD660996DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss contingency, years of activity</link:label>
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    <link:label id="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_325331249E6EFC8C779AD3E50193997D_terseLabel_en-US" xlink:label="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_325331249E6EFC8C779AD3E50193997D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other operating expense (Note 19)</link:label>
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    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_EAC28A36939C23C0DADCD3E50194BF34_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_EAC28A36939C23C0DADCD3E50194BF34" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from long-term debt (Note 13)</link:label>
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_EAC28A36939C23C0DADCD3E50194BF34_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_EAC28A36939C23C0DADCD3E50194BF34" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Long-term Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_EAC28A36939C23C0DADCD3E50194BF34" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_EAC28A36939C23C0DADCD3E50194BF34" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_EAC28A36939C23C0DADCD3E50194BF34" xlink:type="arc" />
    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_3C6A0C094D2283A18245D3E50194978A_negatedLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt_3C6A0C094D2283A18245D3E50194978A" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Payments on long-term debt (Note 13)</link:label>
    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_3C6A0C094D2283A18245D3E50194978A_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt_3C6A0C094D2283A18245D3E50194978A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments of Long-term Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_3C6A0C094D2283A18245D3E50194978A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfLongTermDebt_3C6A0C094D2283A18245D3E50194978A" xlink:to="lab_us-gaap_RepaymentsOfLongTermDebt_3C6A0C094D2283A18245D3E50194978A" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsOfDividends_B470F0E1BD29DD0B144ED3E50194D0C4_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDividends_B470F0E1BD29DD0B144ED3E50194D0C4" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Cash dividends paid</link:label>
    <link:label id="lab_us-gaap_PaymentsOfDividends_B470F0E1BD29DD0B144ED3E50194D0C4_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDividends_B470F0E1BD29DD0B144ED3E50194D0C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments of Dividends</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsOfDividends" xlink:label="loc_us-gaap_PaymentsOfDividends_B470F0E1BD29DD0B144ED3E50194D0C4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfDividends_B470F0E1BD29DD0B144ED3E50194D0C4" xlink:to="lab_us-gaap_PaymentsOfDividends_B470F0E1BD29DD0B144ED3E50194D0C4" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfEquity_F5F1BBB925E8234C70C5D3E5019492ED_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfEquity_F5F1BBB925E8234C70C5D3E5019492ED" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Company stock purchases (Note 8)</link:label>
    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfEquity_F5F1BBB925E8234C70C5D3E5019492ED_label_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfEquity_F5F1BBB925E8234C70C5D3E5019492ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for Repurchase of Equity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsForRepurchaseOfEquity" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfEquity_F5F1BBB925E8234C70C5D3E5019492ED" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForRepurchaseOfEquity_F5F1BBB925E8234C70C5D3E5019492ED" xlink:to="lab_us-gaap_PaymentsForRepurchaseOfEquity_F5F1BBB925E8234C70C5D3E5019492ED" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromStockOptionsExercised_F0932005DB8A632D7AC3D3E50194D549_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromStockOptionsExercised_F0932005DB8A632D7AC3D3E50194D549" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exercise of stock options (Note 8)</link:label>
    <link:label id="lab_us-gaap_ProceedsFromStockOptionsExercised_F0932005DB8A632D7AC3D3E50194D549_label_en-US" xlink:label="lab_us-gaap_ProceedsFromStockOptionsExercised_F0932005DB8A632D7AC3D3E50194D549" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Stock Options Exercised</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_F0932005DB8A632D7AC3D3E50194D549" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromStockOptionsExercised_F0932005DB8A632D7AC3D3E50194D549" xlink:to="lab_us-gaap_ProceedsFromStockOptionsExercised_F0932005DB8A632D7AC3D3E50194D549" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_2FFCD576D62F6EBC3657D3E50194D9DD_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_2FFCD576D62F6EBC3657D3E50194D9DD" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Cash Flow Used in Financing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_2FFCD576D62F6EBC3657D3E50194D9DD" xlink:type="locator" />
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    <link:label id="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_81C3C6B51B92C3621248D3E5019498EB_terseLabel_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_81C3C6B51B92C3621248D3E5019498EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Effect of exchange rate changes on cash, cash equivalents and restricted cash</link:label>
    <link:label id="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_81C3C6B51B92C3621248D3E5019498EB_label_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_81C3C6B51B92C3621248D3E5019498EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effect of Exchange Rate on Cash and Cash Equivalents</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_81C3C6B51B92C3621248D3E5019498EB" xlink:type="locator" />
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    <link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_C32D25DE346DDC2952B0D3E50194D4A4_totalLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_C32D25DE346DDC2952B0D3E50194D4A4" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Decrease in cash, cash equivalents and restricted cash</link:label>
    <link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_C32D25DE346DDC2952B0D3E50194D4A4_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_C32D25DE346DDC2952B0D3E50194D4A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_C32D25DE346DDC2952B0D3E50194D4A4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_C32D25DE346DDC2952B0D3E50194D4A4" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_C32D25DE346DDC2952B0D3E50194D4A4" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_0AF7267AB1919C46C010D3E5019542C9_periodStartLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_0AF7267AB1919C46C010D3E5019542C9" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning cash, cash equivalents and restricted cash</link:label>
    <link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_0AF7267AB1919C46C010D3E5019542C9_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_0AF7267AB1919C46C010D3E5019542C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_0AF7267AB1919C46C010D3E5019542C9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_0AF7267AB1919C46C010D3E5019542C9" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_0AF7267AB1919C46C010D3E5019542C9" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_6F44AA83EA410ABBDAC7D3E50195BD2E_periodEndLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_6F44AA83EA410ABBDAC7D3E50195BD2E" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending cash, cash equivalents and restricted cash</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_6F44AA83EA410ABBDAC7D3E50195BD2E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_6F44AA83EA410ABBDAC7D3E50195BD2E" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_6F44AA83EA410ABBDAC7D3E50195BD2E" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_DCE63899F72D86399ED2D3E5019513BA_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_DCE63899F72D86399ED2D3E5019513BA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_DCE63899F72D86399ED2D3E5019513BA_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_DCE63899F72D86399ED2D3E5019513BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents, at Carrying Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_DCE63899F72D86399ED2D3E5019513BA" xlink:type="locator" />
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    <link:label id="lab_msa_RestrictedCashCurrentAssetsIncludedinPrepaidExpensesandOtherCurrentAssets_3857059F365C7D6A420CD3E501957C98_terseLabel_en-US" xlink:label="lab_msa_RestrictedCashCurrentAssetsIncludedinPrepaidExpensesandOtherCurrentAssets_3857059F365C7D6A420CD3E501957C98" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted cash included in prepaid expenses and other current assets</link:label>
    <link:label id="lab_msa_RestrictedCashCurrentAssetsIncludedinPrepaidExpensesandOtherCurrentAssets_3857059F365C7D6A420CD3E501957C98_label_en-US" xlink:label="lab_msa_RestrictedCashCurrentAssetsIncludedinPrepaidExpensesandOtherCurrentAssets_3857059F365C7D6A420CD3E501957C98" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Cash, Current Assets, Included in Prepaid Expenses and Other Current Assets</link:label>
    <link:label id="lab_msa_RestrictedCashCurrentAssetsIncludedinPrepaidExpensesandOtherCurrentAssets_3857059F365C7D6A420CD3E501957C98_documentation_en-US" xlink:label="lab_msa_RestrictedCashCurrentAssetsIncludedinPrepaidExpensesandOtherCurrentAssets_3857059F365C7D6A420CD3E501957C98" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restricted Cash, Current Assets, Included in Prepaid Expenses and Other Current Assets</link:label>
    <link:loc xlink:href="msa-20180331.xsd#msa_RestrictedCashCurrentAssetsIncludedinPrepaidExpensesandOtherCurrentAssets" xlink:label="loc_msa_RestrictedCashCurrentAssetsIncludedinPrepaidExpensesandOtherCurrentAssets_3857059F365C7D6A420CD3E501957C98" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ProductLiabilityContingenciesTextBlock_BF5E0B849244E2694102D3E4FF4E1916_terseLabel_en-US" xlink:label="lab_us-gaap_ProductLiabilityContingenciesTextBlock_BF5E0B849244E2694102D3E4FF4E1916" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Cumulative Trauma Product Liability Claims Activity</link:label>
    <link:label id="lab_us-gaap_ProductLiabilityContingenciesTextBlock_BF5E0B849244E2694102D3E4FF4E1916_label_en-US" xlink:label="lab_us-gaap_ProductLiabilityContingenciesTextBlock_BF5E0B849244E2694102D3E4FF4E1916" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product Liability Contingencies [Table Text Block]</link:label>
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    <link:label id="lab_msa_SummaryOfInsuranceReceivableBalancesAndActivityRelatedToProductLiabilityLossesTableTextBlock_619C350639C09F99521CD3E4FF4E79D7_terseLabel_en-US" xlink:label="lab_msa_SummaryOfInsuranceReceivableBalancesAndActivityRelatedToProductLiabilityLossesTableTextBlock_619C350639C09F99521CD3E4FF4E79D7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Insurance Receivable Balances and Activity Related to Cumulative Trauma Product Liability Losses</link:label>
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    <link:label id="lab_us-gaap_IncomeStatementAbstract_3EB66693F6418680D0D6C01D7F607F67_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_3EB66693F6418680D0D6C01D7F607F67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Statement [Abstract]</link:label>
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    <link:label id="lab_us-gaap_GrossProfit_7CBF96562E8E139EB839C01D7F609CCB_totalLabel_en-US" xlink:label="lab_us-gaap_GrossProfit_7CBF96562E8E139EB839C01D7F609CCB" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Gross profit</link:label>
    <link:label id="lab_us-gaap_GrossProfit_7CBF96562E8E139EB839C01D7F609CCB_label_en-US" xlink:label="lab_us-gaap_GrossProfit_7CBF96562E8E139EB839C01D7F609CCB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gross Profit</link:label>
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    <link:label id="lab_us-gaap_SellingGeneralAndAdministrativeExpense_0DAE05C8B7199C36B903C01D7F608D74_terseLabel_en-US" xlink:label="lab_us-gaap_SellingGeneralAndAdministrativeExpense_0DAE05C8B7199C36B903C01D7F608D74" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Selling, general and administrative</link:label>
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    <link:label id="lab_us-gaap_ResearchAndDevelopmentExpense_702437A348B3F941E49EC01D7F607601_label_en-US" xlink:label="lab_us-gaap_ResearchAndDevelopmentExpense_702437A348B3F941E49EC01D7F607601" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Research and Development Expense</link:label>
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    <link:label id="lab_us-gaap_RestructuringCharges_95171FD5F72FF6AF3030C01D7F601F53_verboseLabel_en-US" xlink:label="lab_us-gaap_RestructuringCharges_95171FD5F72FF6AF3030C01D7F601F53" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Restructuring charges (Note 5)</link:label>
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    <link:label id="lab_us-gaap_OtherNonoperatingIncomeExpense_E8299E0B03F8E51B0B6FC01D7F607FA5_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpense_E8299E0B03F8E51B0B6FC01D7F607FA5" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Other income, net</link:label>
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    <link:label id="lab_us-gaap_NonoperatingIncomeExpense_F4A375B072983AB44552C01D7F601B7D_negatedTotalLabel_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_F4A375B072983AB44552C01D7F601B7D" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US">Total other expense, net</link:label>
    <link:label id="lab_us-gaap_NonoperatingIncomeExpense_F4A375B072983AB44552C01D7F601B7D_label_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_F4A375B072983AB44552C01D7F601B7D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nonoperating Income (Expense)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_F4A375B072983AB44552C01D7F601B7D" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_6B31C730A0CB92267F81C01D7F60FCA1_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_6B31C730A0CB92267F81C01D7F60FCA1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Income before income taxes</link:label>
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    <link:label id="lab_us-gaap_LettersOfCreditOutstandingAmount_74BD40E6F27DF714698FD3FE0AAA61A2_terseLabel_en-US" xlink:label="lab_us-gaap_LettersOfCreditOutstandingAmount_74BD40E6F27DF714698FD3FE0AAA61A2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from lines of credit</link:label>
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_D0F36CCACE7ED44984D5D3E4FF771120_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_D0F36CCACE7ED44984D5D3E4FF771120" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_D0F36CCACE7ED44984D5D3E4FF771120" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_D0F36CCACE7ED44984D5D3E4FF771120" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_D0F36CCACE7ED44984D5D3E4FF771120" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_C07D5E4A6A92D9B8A27ED3E4FF777A74_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_C07D5E4A6A92D9B8A27ED3E4FF777A74" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Four</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_C07D5E4A6A92D9B8A27ED3E4FF777A74_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_C07D5E4A6A92D9B8A27ED3E4FF777A74" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_C07D5E4A6A92D9B8A27ED3E4FF777A74" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_C07D5E4A6A92D9B8A27ED3E4FF777A74" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_C07D5E4A6A92D9B8A27ED3E4FF777A74" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_353E64EE0E731FB17876D3E4FF78451E_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_353E64EE0E731FB17876D3E4FF78451E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated future amortization expense, year 2</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_353E64EE0E731FB17876D3E4FF78451E_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_353E64EE0E731FB17876D3E4FF78451E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_353E64EE0E731FB17876D3E4FF78451E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_353E64EE0E731FB17876D3E4FF78451E" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_353E64EE0E731FB17876D3E4FF78451E" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_63C6F8E218B52AA1BF41D3E4FF78FED2_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_63C6F8E218B52AA1BF41D3E4FF78FED2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated future amortization expense, year 3</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_63C6F8E218B52AA1BF41D3E4FF78FED2_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_63C6F8E218B52AA1BF41D3E4FF78FED2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_63C6F8E218B52AA1BF41D3E4FF78FED2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_63C6F8E218B52AA1BF41D3E4FF78FED2" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_63C6F8E218B52AA1BF41D3E4FF78FED2" xlink:type="arc" />
    <link:label id="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseRemainderOfFiscalYear_119015DA71A068F3C479D3E4FF7805C5_terseLabel_en-US" xlink:label="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseRemainderOfFiscalYear_119015DA71A068F3C479D3E4FF7805C5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated future depreciation expense, remainder of fiscal year</link:label>
    <link:label id="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseRemainderOfFiscalYear_119015DA71A068F3C479D3E4FF7805C5_label_en-US" xlink:label="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseRemainderOfFiscalYear_119015DA71A068F3C479D3E4FF7805C5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquired Property, Plant And Equipment, Depreciation Expense, Remainder Of Fiscal Year</link:label>
    <link:label id="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseRemainderOfFiscalYear_119015DA71A068F3C479D3E4FF7805C5_documentation_en-US" xlink:label="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseRemainderOfFiscalYear_119015DA71A068F3C479D3E4FF7805C5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquired Property, Plant And Equipment, Depreciation Expense, Remainder Of Fiscal Year</link:label>
    <link:loc xlink:href="msa-20180331.xsd#msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseRemainderOfFiscalYear" xlink:label="loc_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseRemainderOfFiscalYear_119015DA71A068F3C479D3E4FF7805C5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseRemainderOfFiscalYear_119015DA71A068F3C479D3E4FF7805C5" xlink:to="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseRemainderOfFiscalYear_119015DA71A068F3C479D3E4FF7805C5" xlink:type="arc" />
    <link:label id="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseNextTwelveMonths_48FAEB5598C06C2B724DD3E4FF783D4F_terseLabel_en-US" xlink:label="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseNextTwelveMonths_48FAEB5598C06C2B724DD3E4FF783D4F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated future depreciation expense, year 1</link:label>
    <link:label id="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseNextTwelveMonths_48FAEB5598C06C2B724DD3E4FF783D4F_label_en-US" xlink:label="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseNextTwelveMonths_48FAEB5598C06C2B724DD3E4FF783D4F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquired Property, Plant And Equipment, Depreciation Expense, Next Twelve Months</link:label>
    <link:label id="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseNextTwelveMonths_48FAEB5598C06C2B724DD3E4FF783D4F_documentation_en-US" xlink:label="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseNextTwelveMonths_48FAEB5598C06C2B724DD3E4FF783D4F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquired Property, Plant And Equipment, Depreciation Expense, Next Twelve Months</link:label>
    <link:loc xlink:href="msa-20180331.xsd#msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseNextTwelveMonths" xlink:label="loc_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseNextTwelveMonths_48FAEB5598C06C2B724DD3E4FF783D4F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseNextTwelveMonths_48FAEB5598C06C2B724DD3E4FF783D4F" xlink:to="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseNextTwelveMonths_48FAEB5598C06C2B724DD3E4FF783D4F" xlink:type="arc" />
    <link:label id="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearTwo_E0E2D153BD373108F348D3E4FF78591C_terseLabel_en-US" xlink:label="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearTwo_E0E2D153BD373108F348D3E4FF78591C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated future depreciation expense, year 2</link:label>
    <link:label id="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearTwo_E0E2D153BD373108F348D3E4FF78591C_label_en-US" xlink:label="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearTwo_E0E2D153BD373108F348D3E4FF78591C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquired Property, Plant And Equipment, Depreciation Expense, Year Two</link:label>
    <link:label id="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearTwo_E0E2D153BD373108F348D3E4FF78591C_documentation_en-US" xlink:label="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearTwo_E0E2D153BD373108F348D3E4FF78591C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquired Property, Plant And Equipment, Depreciation Expense, Year Two</link:label>
    <link:loc xlink:href="msa-20180331.xsd#msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearTwo" xlink:label="loc_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearTwo_E0E2D153BD373108F348D3E4FF78591C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearTwo_E0E2D153BD373108F348D3E4FF78591C" xlink:to="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearTwo_E0E2D153BD373108F348D3E4FF78591C" xlink:type="arc" />
    <link:label id="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearThree_C3363475395C12D46DE2D3E4FF785ABF_terseLabel_en-US" xlink:label="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearThree_C3363475395C12D46DE2D3E4FF785ABF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated future depreciation expense, year 3</link:label>
    <link:label id="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearThree_C3363475395C12D46DE2D3E4FF785ABF_label_en-US" xlink:label="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearThree_C3363475395C12D46DE2D3E4FF785ABF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquired Property, Plant And Equipment, Depreciation Expense, Year Three</link:label>
    <link:label id="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearThree_C3363475395C12D46DE2D3E4FF785ABF_documentation_en-US" xlink:label="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearThree_C3363475395C12D46DE2D3E4FF785ABF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquired Property, Plant And Equipment, Depreciation Expense, Year Three</link:label>
    <link:loc xlink:href="msa-20180331.xsd#msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearThree" xlink:label="loc_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearThree_C3363475395C12D46DE2D3E4FF785ABF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearThree_C3363475395C12D46DE2D3E4FF785ABF" xlink:to="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearThree_C3363475395C12D46DE2D3E4FF785ABF" xlink:type="arc" />
    <link:label id="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearFour_23909C14CF997593C9DBD3E4FF78696A_terseLabel_en-US" xlink:label="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearFour_23909C14CF997593C9DBD3E4FF78696A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated future depreciation expense, year 4</link:label>
    <link:label id="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearFour_23909C14CF997593C9DBD3E4FF78696A_label_en-US" xlink:label="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearFour_23909C14CF997593C9DBD3E4FF78696A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquired Property, Plant And Equipment, Depreciation Expense, Year Four</link:label>
    <link:label id="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearFour_23909C14CF997593C9DBD3E4FF78696A_documentation_en-US" xlink:label="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearFour_23909C14CF997593C9DBD3E4FF78696A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquired Property, Plant And Equipment, Depreciation Expense, Year Four</link:label>
    <link:loc xlink:href="msa-20180331.xsd#msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearFour" xlink:label="loc_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearFour_23909C14CF997593C9DBD3E4FF78696A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearFour_23909C14CF997593C9DBD3E4FF78696A" xlink:to="lab_msa_AcquiredPropertyPlantAndEquipmentDepreciationExpenseYearFour_23909C14CF997593C9DBD3E4FF78696A" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_F95B562AE9B64E0FD2C7D3E4FF789096_netLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_F95B562AE9B64E0FD2C7D3E4FF789096" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Sales</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_F95B562AE9B64E0FD2C7D3E4FF789096_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_F95B562AE9B64E0FD2C7D3E4FF789096" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_F95B562AE9B64E0FD2C7D3E4FF789096" xlink:type="locator" />
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    <link:label id="lab_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_D94FF009F3DB453766CED3E4FF789708_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_D94FF009F3DB453766CED3E4FF789708" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net income</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_D94FF009F3DB453766CED3E4FF789708_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_D94FF009F3DB453766CED3E4FF789708" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_D94FF009F3DB453766CED3E4FF789708" xlink:type="locator" />
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_C5D0F1EB0D050C85478F86E1CAD232C7_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_C5D0F1EB0D050C85478F86E1CAD232C7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Net [Abstract]</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_C5D0F1EB0D050C85478F86E1CAD232C7_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_C5D0F1EB0D050C85478F86E1CAD232C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Net [Abstract]</link:label>
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    <link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_69A59A3C50D72042A74995F55E9B4A8A_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_69A59A3C50D72042A74995F55E9B4A8A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock issued during period, new issues (shares)</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_69A59A3C50D72042A74995F55E9B4A8A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_FA1B646500B076E2A52895F55E9B4AD2_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_FA1B646500B076E2A52895F55E9B4AD2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, shares, outstanding (shares)</link:label>
    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_FA1B646500B076E2A52895F55E9B4AD2_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_FA1B646500B076E2A52895F55E9B4AD2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Shares, Outstanding</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_FA1B646500B076E2A52895F55E9B4AD2" xlink:type="locator" />
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    <link:label id="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount1_084FBE17C21AC36B7D8495F55E9BCE1D_terseLabel_en-US" xlink:label="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount1_084FBE17C21AC36B7D8495F55E9BCE1D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, value, issued</link:label>
    <link:label id="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount1_084FBE17C21AC36B7D8495F55E9BCE1D_label_en-US" xlink:label="lab_us-gaap_StockRepurchaseProgramAuthorizedAmount1_084FBE17C21AC36B7D8495F55E9BCE1D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Repurchase Program, Authorized Amount</link:label>
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    <link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_437E24D44468C8F0B7BD95F55E9B5441_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_437E24D44468C8F0B7BD95F55E9B5441" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Shares, Share-based Compensation, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_437E24D44468C8F0B7BD95F55E9B5441" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AssetsAbstract_47757E48BF4ADBCA54DDD3E501D73A95_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsAbstract_47757E48BF4ADBCA54DDD3E501D73A95" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:label id="lab_us-gaap_AssetsAbstract_47757E48BF4ADBCA54DDD3E501D73A95_label_en-US" xlink:label="lab_us-gaap_AssetsAbstract_47757E48BF4ADBCA54DDD3E501D73A95" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_47757E48BF4ADBCA54DDD3E501D73A95" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AssetsCurrentAbstract_6EDB820572CEA4ABB22BD3E501D7DC0F_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_6EDB820572CEA4ABB22BD3E501D7DC0F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current assets</link:label>
    <link:label id="lab_us-gaap_AssetsCurrentAbstract_6EDB820572CEA4ABB22BD3E501D7DC0F_label_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_6EDB820572CEA4ABB22BD3E501D7DC0F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Current [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="loc_us-gaap_AssetsCurrentAbstract_6EDB820572CEA4ABB22BD3E501D7DC0F" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AccountsReceivableNetCurrent_DEFA42CC0D4533C8F37CD3E501D71543_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_DEFA42CC0D4533C8F37CD3E501D71543" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trade receivables, less allowance for doubtful accounts of $5,816 and $5,540</link:label>
    <link:label id="lab_us-gaap_AccountsReceivableNetCurrent_DEFA42CC0D4533C8F37CD3E501D71543_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_DEFA42CC0D4533C8F37CD3E501D71543" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Receivable, Net, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_DEFA42CC0D4533C8F37CD3E501D71543" xlink:type="locator" />
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    <link:label id="lab_us-gaap_InventoryNet_D02927908F04448108A9D3E501D77C8C_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryNet_D02927908F04448108A9D3E501D77C8C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories (Note 4)</link:label>
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    <link:label id="lab_us-gaap_IncomeTaxesReceivable_669EF9AFA0931AAD137CD3E501D7A121_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxesReceivable_669EF9AFA0931AAD137CD3E501D7A121" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Prepaid income taxes</link:label>
    <link:label id="lab_us-gaap_IncomeTaxesReceivable_669EF9AFA0931AAD137CD3E501D7A121_label_en-US" xlink:label="lab_us-gaap_IncomeTaxesReceivable_669EF9AFA0931AAD137CD3E501D7A121" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Taxes Receivable, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxesReceivable" xlink:label="loc_us-gaap_IncomeTaxesReceivable_669EF9AFA0931AAD137CD3E501D7A121" xlink:type="locator" />
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    <link:label id="lab_msa_NotesLoansandFinancingReceivableNetInsuranceCompaniesCurrent_B3DA5324E41305E2C8A2D3E501D79CE4_verboseLabel_en-US" xlink:label="lab_msa_NotesLoansandFinancingReceivableNetInsuranceCompaniesCurrent_B3DA5324E41305E2C8A2D3E501D79CE4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Notes receivable, insurance companies (Note 19)</link:label>
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    <link:label id="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_24408A71B7145D28AB7ED3E501D76684_label_en-US" xlink:label="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_24408A71B7145D28AB7ED3E501D76684" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Prepaid Expense and Other Assets, Current</link:label>
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    <link:label id="lab_us-gaap_AssetsCurrent_3FE9CB56E90D045B9A85D3E501D7B68E_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_3FE9CB56E90D045B9A85D3E501D7B68E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current assets</link:label>
    <link:label id="lab_us-gaap_AssetsCurrent_3FE9CB56E90D045B9A85D3E501D7B68E_label_en-US" xlink:label="lab_us-gaap_AssetsCurrent_3FE9CB56E90D045B9A85D3E501D7B68E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets, Current</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrent_3FE9CB56E90D045B9A85D3E501D7B68E" xlink:to="lab_us-gaap_AssetsCurrent_3FE9CB56E90D045B9A85D3E501D7B68E" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_A70BC38D664825C38AA9D3E501D7B7E8_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_A70BC38D664825C38AA9D3E501D7B7E8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment, net (Note 6)</link:label>
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    <link:label id="lab_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_7E007B5BCCE824396BBBD3E501D77EAF_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_7E007B5BCCE824396BBBD3E501D77EAF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Prepaid pension cost</link:label>
    <link:label id="lab_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_7E007B5BCCE824396BBBD3E501D77EAF_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_7E007B5BCCE824396BBBD3E501D77EAF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets for Plan Benefits, Defined Benefit Plan</link:label>
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    <link:label id="lab_us-gaap_DeferredTaxAssetsNet_817171C49AE6B3422B51D3E501D7FC75_label_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsNet_817171C49AE6B3422B51D3E501D7FC75" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Tax Assets, Net of Valuation Allowance</link:label>
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    <link:label id="lab_us-gaap_Goodwill_E3B6CAD96283A9626720D3E501D73252_verboseLabel_en-US" xlink:label="lab_us-gaap_Goodwill_E3B6CAD96283A9626720D3E501D73252" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Goodwill (Note 14)</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_E3B6CAD96283A9626720D3E501D73252" xlink:to="lab_us-gaap_Goodwill_E3B6CAD96283A9626720D3E501D73252" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_84630443689128CDDDC7D3E501D84D37_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_84630443689128CDDDC7D3E501D84D37" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible assets (Note 14)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_84630443689128CDDDC7D3E501D84D37" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_84630443689128CDDDC7D3E501D84D37" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsNet_84630443689128CDDDC7D3E501D84D37" xlink:type="arc" />
    <link:label id="lab_msa_NotesLoansandFinancingReceivableNetInsuranceCompaniesNoncurrent_D780A7479E85A662D583D3E501D8E0FD_terseLabel_en-US" xlink:label="lab_msa_NotesLoansandFinancingReceivableNetInsuranceCompaniesNoncurrent_D780A7479E85A662D583D3E501D8E0FD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Notes receivable, insurance companies, noncurrent (Note 19)</link:label>
    <link:loc xlink:href="msa-20180331.xsd#msa_NotesLoansandFinancingReceivableNetInsuranceCompaniesNoncurrent" xlink:label="loc_msa_NotesLoansandFinancingReceivableNetInsuranceCompaniesNoncurrent_D780A7479E85A662D583D3E501D8E0FD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msa_NotesLoansandFinancingReceivableNetInsuranceCompaniesNoncurrent_D780A7479E85A662D583D3E501D8E0FD" xlink:to="lab_msa_NotesLoansandFinancingReceivableNetInsuranceCompaniesNoncurrent_D780A7479E85A662D583D3E501D8E0FD" xlink:type="arc" />
    <link:label id="lab_us-gaap_Assets_343F7580930390C7D852D3E501D8A367_totalLabel_en-US" xlink:label="lab_us-gaap_Assets_343F7580930390C7D852D3E501D8A367" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total assets</link:label>
    <link:label id="lab_us-gaap_Assets_343F7580930390C7D852D3E501D8A367_label_en-US" xlink:label="lab_us-gaap_Assets_343F7580930390C7D852D3E501D8A367" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_343F7580930390C7D852D3E501D8A367" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_343F7580930390C7D852D3E501D8A367" xlink:to="lab_us-gaap_Assets_343F7580930390C7D852D3E501D8A367" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesAbstract_B129DE2F991892493835D3E501D8639E_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAbstract_B129DE2F991892493835D3E501D8639E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liabilities</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAbstract_B129DE2F991892493835D3E501D8639E_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAbstract_B129DE2F991892493835D3E501D8639E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesAbstract" xlink:label="loc_us-gaap_LiabilitiesAbstract_B129DE2F991892493835D3E501D8639E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAbstract_B129DE2F991892493835D3E501D8639E" xlink:to="lab_us-gaap_LiabilitiesAbstract_B129DE2F991892493835D3E501D8639E" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_A2B13B90E31D4DB4619BD3E501D80CEF_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_A2B13B90E31D4DB4619BD3E501D80CEF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current liabilities</link:label>
    <link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_A2B13B90E31D4DB4619BD3E501D80CEF_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_A2B13B90E31D4DB4619BD3E501D80CEF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Current [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_A2B13B90E31D4DB4619BD3E501D80CEF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_A2B13B90E31D4DB4619BD3E501D80CEF" xlink:to="lab_us-gaap_LiabilitiesCurrentAbstract_A2B13B90E31D4DB4619BD3E501D80CEF" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtCurrent_EC52A45E587AE17F8342D3E501D8F141_terseLabel_en-US" xlink:label="lab_us-gaap_DebtCurrent_EC52A45E587AE17F8342D3E501D8F141" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Notes payable and current portion of long-term debt, net (Note 13)</link:label>
    <link:label id="lab_us-gaap_DebtCurrent_EC52A45E587AE17F8342D3E501D8F141_label_en-US" xlink:label="lab_us-gaap_DebtCurrent_EC52A45E587AE17F8342D3E501D8F141" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtCurrent" xlink:label="loc_us-gaap_DebtCurrent_EC52A45E587AE17F8342D3E501D8F141" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtCurrent_EC52A45E587AE17F8342D3E501D8F141" xlink:to="lab_us-gaap_DebtCurrent_EC52A45E587AE17F8342D3E501D8F141" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsPayableCurrent_D5068043CE234F946728D3E501D800A8_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_D5068043CE234F946728D3E501D800A8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable</link:label>
    <link:label id="lab_us-gaap_AccountsPayableCurrent_D5068043CE234F946728D3E501D800A8_label_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_D5068043CE234F946728D3E501D800A8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Payable, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_D5068043CE234F946728D3E501D800A8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableCurrent_D5068043CE234F946728D3E501D800A8" xlink:to="lab_us-gaap_AccountsPayableCurrent_D5068043CE234F946728D3E501D800A8" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_F8A5DCC2E7D2C84CFC6DD3E501D85ACB_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_F8A5DCC2E7D2C84CFC6DD3E501D85ACB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employees&#8217; compensation</link:label>
    <link:label id="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_F8A5DCC2E7D2C84CFC6DD3E501D85ACB_label_en-US" xlink:label="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_F8A5DCC2E7D2C84CFC6DD3E501D85ACB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee-related Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_F8A5DCC2E7D2C84CFC6DD3E501D85ACB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_F8A5DCC2E7D2C84CFC6DD3E501D85ACB" xlink:to="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_F8A5DCC2E7D2C84CFC6DD3E501D85ACB" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_C6507E9982BA039A487FD3E501D9703B_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_C6507E9982BA039A487FD3E501D9703B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Insurance and product liability (Note 19)</link:label>
    <link:label id="lab_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_C6507E9982BA039A487FD3E501D9703B_label_en-US" xlink:label="lab_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_C6507E9982BA039A487FD3E501D9703B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liability for Claims and Claims Adjustment Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense" xlink:label="loc_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_C6507E9982BA039A487FD3E501D9703B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_C6507E9982BA039A487FD3E501D9703B" xlink:to="lab_us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense_C6507E9982BA039A487FD3E501D9703B" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccruedIncomeTaxesCurrent_48AB14FFDF1C54032827D3E501DEDE75_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesCurrent_48AB14FFDF1C54032827D3E501DEDE75" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income taxes payable (Note 11)</link:label>
    <link:label id="lab_us-gaap_AccruedIncomeTaxesCurrent_48AB14FFDF1C54032827D3E501DEDE75_label_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesCurrent_48AB14FFDF1C54032827D3E501DEDE75" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Income Taxes, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccruedIncomeTaxesCurrent" xlink:label="loc_us-gaap_AccruedIncomeTaxesCurrent_48AB14FFDF1C54032827D3E501DEDE75" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedIncomeTaxesCurrent_48AB14FFDF1C54032827D3E501DEDE75" xlink:to="lab_us-gaap_AccruedIncomeTaxesCurrent_48AB14FFDF1C54032827D3E501DEDE75" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherLiabilitiesCurrent_6112F459DFBF75A7FB0ED3E501DE1EBF_terseLabel_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesCurrent_6112F459DFBF75A7FB0ED3E501DE1EBF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Warranty reserve (Note 19) and other current liabilities</link:label>
    <link:label id="lab_us-gaap_OtherLiabilitiesCurrent_6112F459DFBF75A7FB0ED3E501DE1EBF_label_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesCurrent_6112F459DFBF75A7FB0ED3E501DE1EBF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_6112F459DFBF75A7FB0ED3E501DE1EBF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherLiabilitiesCurrent_6112F459DFBF75A7FB0ED3E501DE1EBF" xlink:to="lab_us-gaap_OtherLiabilitiesCurrent_6112F459DFBF75A7FB0ED3E501DE1EBF" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesCurrent_E7AEF510AF0B6DCB00F8D3E501DEF0BF_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_E7AEF510AF0B6DCB00F8D3E501DEF0BF" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current liabilities</link:label>
    <link:label id="lab_us-gaap_LiabilitiesCurrent_E7AEF510AF0B6DCB00F8D3E501DEF0BF_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_E7AEF510AF0B6DCB00F8D3E501DEF0BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_E7AEF510AF0B6DCB00F8D3E501DEF0BF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrent_E7AEF510AF0B6DCB00F8D3E501DEF0BF" xlink:to="lab_us-gaap_LiabilitiesCurrent_E7AEF510AF0B6DCB00F8D3E501DEF0BF" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtNoncurrent_DCF0C3B541A7D478C15CD3E501DED779_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtNoncurrent_DCF0C3B541A7D478C15CD3E501DED779" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt, net (Note 13)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_DCF0C3B541A7D478C15CD3E501DED779" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtNoncurrent_DCF0C3B541A7D478C15CD3E501DED779" xlink:to="lab_us-gaap_LongTermDebtNoncurrent_DCF0C3B541A7D478C15CD3E501DED779" xlink:type="arc" />
    <link:label id="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_400FCDDD484BDF8608A5D3E501DEF5C7_terseLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_400FCDDD484BDF8608A5D3E501DEF5C7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pensions and other employee benefits</link:label>
    <link:label id="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_400FCDDD484BDF8608A5D3E501DEF5C7_label_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_400FCDDD484BDF8608A5D3E501DEF5C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liability, Defined Benefit Plan, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_400FCDDD484BDF8608A5D3E501DEF5C7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_400FCDDD484BDF8608A5D3E501DEF5C7" xlink:to="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_400FCDDD484BDF8608A5D3E501DEF5C7" xlink:type="arc" />
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    <link:label id="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_940A3F41AD48F31EDC61D3E501DE439F_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_940A3F41AD48F31EDC61D3E501DE439F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Income Tax Liabilities, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_940A3F41AD48F31EDC61D3E501DE439F" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_4B2D0524EE2D8C90AB21D3E501DF2FA3_label_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_4B2D0524EE2D8C90AB21D3E501DF2FA3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Liabilities, Noncurrent</link:label>
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