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      <link:roleType id="RecentlyAdoptedAndRecentlyIssuedAccountingStandards" roleURI="http://www.msasafety.com/role/RecentlyAdoptedAndRecentlyIssuedAccountingStandards">
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      <link:roleType id="RecentlyAdoptedAndRecentlyIssuedAccountingStandardsAdditionalInformationDetails" roleURI="http://www.msasafety.com/role/RecentlyAdoptedAndRecentlyIssuedAccountingStandardsAdditionalInformationDetails">
        <link:definition>2402401 - Disclosure - Recently Adopted and Recently Issued Accounting Standards - Additional Information (Details)</link:definition>
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      <link:roleType id="ReclassificationsOutOfAccumulatedOtherComprehensiveLoss" roleURI="http://www.msasafety.com/role/ReclassificationsOutOfAccumulatedOtherComprehensiveLoss">
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      <link:roleType id="ReclassificationsOutOfAccumulatedOtherComprehensiveLossDetails" roleURI="http://www.msasafety.com/role/ReclassificationsOutOfAccumulatedOtherComprehensiveLossDetails">
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      <link:roleType id="ReclassificationsOutOfAccumulatedOtherComprehensiveLossTables" roleURI="http://www.msasafety.com/role/ReclassificationsOutOfAccumulatedOtherComprehensiveLossTables">
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        <link:definition>2405403 - Disclosure - Restructuring Charges - Activity and Reserve Balance for Restructuring Charges by Segment (Details)</link:definition>
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  <xsd:element id="msa_NotesLoansandFinancingReceivableInsuranceCompaniesAdditions" name="NotesLoansandFinancingReceivableInsuranceCompaniesAdditions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="msa_NotesLoansandFinancingReceivableInsuranceCompaniesProceeds" name="NotesLoansandFinancingReceivableInsuranceCompaniesProceeds" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="msa_NotesLoansandFinancingReceivableNetInsuranceCompanies" name="NotesLoansandFinancingReceivableNetInsuranceCompanies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="msa_NotesLoansandFinancingReceivableNetInsuranceCompaniesCurrent" name="NotesLoansandFinancingReceivableNetInsuranceCompaniesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="msa_NotesLoansandFinancingReceivableNetInsuranceCompaniesNoncurrent" name="NotesLoansandFinancingReceivableNetInsuranceCompaniesNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="msa_NotesReceivablesfromInsuranceCompaniesNoncurrent" name="NotesReceivablesfromInsuranceCompaniesNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="msa_NumberofEmployeesRevocableElectiontoRetire" name="NumberofEmployeesRevocableElectiontoRetire" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="msa_OperatingIncomeLossAdjusted" name="OperatingIncomeLossAdjusted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="msa_OtherProductsMember" name="OtherProductsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="msa_PercentageOfTargetAwardBasedOnAchievingTargetedReturnOnNetAssetsBasedOnWhichFinalNumberOfSharesToBeIssuedForPerformanceStockUnits" name="PercentageOfTargetAwardBasedOnAchievingTargetedReturnOnNetAssetsBasedOnWhichFinalNumberOfSharesToBeIssuedForPerformanceStockUnits" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="msa_PercentageOfTargetAwardBasedOnAchievingTargetedTotalShareholderReturnBasedOnWhichFinalNumberOfSharesToBeIssuedForPerformanceStockUnits" name="PercentageOfTargetAwardBasedOnAchievingTargetedTotalShareholderReturnBasedOnWhichFinalNumberOfSharesToBeIssuedForPerformanceStockUnits" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="msa_PortableInstrumentsMember" name="PortableInstrumentsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="msa_PunitiveDamagesMember" name="PunitiveDamagesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="msa_RecentlyAdoptedandRecentlyIssuedAccountingStandardsAbstract" name="RecentlyAdoptedandRecentlyIssuedAccountingStandardsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="msa_RestrictedCashCurrentAssetsIncludedinPrepaidExpensesandOtherCurrentAssets" name="RestrictedCashCurrentAssetsIncludedinPrepaidExpensesandOtherCurrentAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="msa_RestrictedStockActivityMember" name="RestrictedStockActivityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="msa_RestructuringChargesbeforeAdjustments" name="RestructuringChargesbeforeAdjustments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="msa_SalesThroughDistributors" name="SalesThroughDistributors" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="msa_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardPlanNameAxis" name="ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardPlanNameAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="msa_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardPlanNameDomain" name="ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardPlanNameDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="msa_ScheduleofSharebasedPaymentAwardEquityInstrumentsOtherthanOptionsValuationAssumptionsTableTextBlock" name="ScheduleofSharebasedPaymentAwardEquityInstrumentsOtherthanOptionsValuationAssumptionsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="msa_SecondCumulativePreferredVotingStockMember" name="SecondCumulativePreferredVotingStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="msa_SeniorNotesPayableThroughTwoThousandThirtyOneThreePointFourPercentageMemberMember" name="SeniorNotesPayableThroughTwoThousandThirtyOneThreePointFourPercentageMemberMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="msa_SeniorNotesPayableThroughTwoThousandTwentyOneFivePointFourtyOnePercentageMember" name="SeniorNotesPayableThroughTwoThousandTwentyOneFivePointFourtyOnePercentageMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="msa_SeniorNotesPayableThroughTwoThousandTwentyOneFourPointZeroZeroPercentageMember" name="SeniorNotesPayableThroughTwoThousandTwentyOneFourPointZeroZeroPercentageMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="msa_SeniorRevolvingCreditFacilityMaturingin2020Member" name="SeniorRevolvingCreditFacilityMaturingin2020Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="msa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceAdjustmentInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceAdjustmentInPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="msa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceAdjustmentInPeriodWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceAdjustmentInPeriodWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="msa_SharebasedCompensationArrangementbySharebasePaymentAwardFairValueAssumptionsAverageClosingPriceUsedtoCalculateExpectedDividendRatePeriod" name="SharebasedCompensationArrangementbySharebasePaymentAwardFairValueAssumptionsAverageClosingPriceUsedtoCalculateExpectedDividendRatePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="msa_SharebasedCompensationArrangementbySharebasePaymentAwardFairValueAssumptionsStockBetaDailyPriceDataPeriod" name="SharebasedCompensationArrangementbySharebasePaymentAwardFairValueAssumptionsStockBetaDailyPriceDataPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="msa_SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsStockBeta" name="SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsStockBeta" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="msa_SingleIncidentMember" name="SingleIncidentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="msa_StrategicTransactionCosts" name="StrategicTransactionCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="msa_SummaryOfInsuranceReceivableBalancesAndActivityRelatedToProductLiabilityLossesTableTextBlock" name="SummaryOfInsuranceReceivableBalancesAndActivityRelatedToProductLiabilityLossesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="msa_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDifferencesofNonU.S.SubsidiariesOffsetByForeignTaxCredits" name="TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDifferencesofNonU.S.SubsidiariesOffsetByForeignTaxCredits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="msa_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit" name="TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="msa_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit" name="TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="msa_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefitAdjustmentDuringthePeriod" name="TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefitAdjustmentDuringthePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="msa_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalIncomeTaxExpenseBenefit" name="TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="msa_UninsuredCumulativeTraumaMember" name="UninsuredCumulativeTraumaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="msa_VoluntaryRetirementIncentivePackageMember" name="VoluntaryRetirementIncentivePackageMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
