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  <xs:element id="msa_DeferredTaxAssetMember" abstract="true" name="DeferredTaxAssetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="msa_Paymentsonproductliabilityclaims" abstract="false" name="Paymentsonproductliabilityclaims" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="msa_AdjustedOperatingMarginPercent" abstract="false" name="AdjustedOperatingMarginPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="msa_SummaryOfInsuranceReceivableBalancesAndActivityRelatedToProductLiabilityLossesTableTextBlock" abstract="false" name="SummaryOfInsuranceReceivableBalancesAndActivityRelatedToProductLiabilityLossesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="msa_MasterNoteFacilityDuein2022Member" abstract="true" name="MasterNoteFacilityDuein2022Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="msa_EarningsPerShareContinuingOperationsAbstract" abstract="true" name="EarningsPerShareContinuingOperationsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="msa_RestructuringChargesbeforeAdjustments" abstract="false" name="RestructuringChargesbeforeAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="msa_CommonStockActivityRollForward" abstract="true" name="CommonStockActivityRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="msa_DebtInstrumentCovenantConsolidatedLeverageRatioInPeriodOfAcquisitionMaximum" abstract="false" name="DebtInstrumentCovenantConsolidatedLeverageRatioInPeriodOfAcquisitionMaximum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="msa_FederalFundsOpenRateMember" abstract="true" name="FederalFundsOpenRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="msa_SeniorRevolvingCreditFacilityMaturingin2023Member" abstract="true" name="SeniorRevolvingCreditFacilityMaturingin2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="msa_OtherProductsMember" abstract="true" name="OtherProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="msa_ScheduleofSharebasedPaymentAwardEquityInstrumentsOtherthanOptionsValuationAssumptionsTableTextBlock" abstract="false" name="ScheduleofSharebasedPaymentAwardEquityInstrumentsOtherthanOptionsValuationAssumptionsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="msa_GlobeHoldingCompanyLLCMember" abstract="true" name="GlobeHoldingCompanyLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="msa_MulticurrencyNotesDuein2031Member" abstract="true" name="MulticurrencyNotesDuein2031Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="msa_BreathingApparatusMember" abstract="true" name="BreathingApparatusMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="msa_SierraMonitorCorporationMember" abstract="true" name="SierraMonitorCorporationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="msa_EmployeeStockPurchasePlanMember" abstract="true" name="EmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="msa_NotesLoansandFinancingReceivableInsuranceCompaniesProceeds" abstract="false" name="NotesLoansandFinancingReceivableInsuranceCompaniesProceeds" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="msa_DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations" abstract="false" name="DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="msa_PortableInstrumentsMember" abstract="true" name="PortableInstrumentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="msa_AdjustedEBITDA" abstract="false" name="AdjustedEBITDA" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="msa_UninsuredCumulativeTraumaMember" abstract="true" name="UninsuredCumulativeTraumaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="msa_ClaimsSettledButNotYetPaidMember" abstract="true" name="ClaimsSettledButNotYetPaidMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="msa_NumberOfGeographicalSegments" abstract="false" name="NumberOfGeographicalSegments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="msa_SingleIncidentMember" abstract="true" name="SingleIncidentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="msa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceAdjustmentInPeriodWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceAdjustmentInPeriodWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:perShareItemType"/>
</xs:schema>
