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  <xs:element id="see_ScheduleOfVestedRestrictedStockTableTextBlock" abstract="false" name="ScheduleOfVestedRestrictedStockTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="see_ProductCareMember" abstract="true" name="ProductCareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="see_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentLiabilities" abstract="false" name="BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="see_DefinedBenefitPlanNumberOfPlansPensionPlanProjectedBenefitObligationsExceedFairValueOfPlanAssets" abstract="false" name="DefinedBenefitPlanNumberOfPlansPensionPlanProjectedBenefitObligationsExceedFairValueOfPlanAssets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="see_OtherEmployeeRelatedLiabilitiesNoncurrent" abstract="false" name="OtherEmployeeRelatedLiabilitiesNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
