Designation:D3832−79(Reapproved2011)StandardSpecificationforRubberSealsContactingLiquidsinSolarEnergySystems1ThisstandardisissuedunderthefixeddesignationD3832;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thisspecificationcoversthegeneralrequirementsformaterialsusedinpreformedrubbersealsthatcontactthecirculatingliquidinsolarenergysystems.Particularapplica-tionsmaynecessitateotherrequirementsthatwouldtakeprecedenceovertheserequirementswhenspecified.1.2Thisspecificationdoesnotincluderequirementsper-tainingtothedesign,fabrication,orinstallationoftheseals.2.ReferencedDocuments2.1ASTMStandards:2D395TestMethodsforRubberProperty—CompressionSetD412TestMethodsforVulcanizedRubberandThermoplas-ticElastomers—TensionD471TestMethodforRubberProperty—EffectofLiquidsD1149TestMethodsforRubberDeterioration—CrackinginanOzoneControlledEnvironmentD1229TestMethodforRubberProperty—CompressionSetatLowTemperaturesD1349PracticeforRubber—StandardTemperaturesforTestingD1415TestMethodforRubberProperty—InternationalHardnessD1566TerminologyRelatingtoRubberD2137TestMethodsforRubberProperty—BrittlenessPointofFlexiblePolymersandCoatedFabricsD3182PracticeforRubber—Materials,Equipment,andPro-ceduresforMixingStandardCompoundsandPreparingStandardVulcanizedSheetsD3183PracticeforRubber—PreparationofPiecesforTestPurposesfromProducts2.2OtherStandards:RMAHandbook—RubberProducts:Molded,Extruded,LatheCut,andCellular33.Terminology3.1RefertothedefinitionsoftermsinTerminologyD1566.4.Classification4.1Types:4.1.1TypeC,intendedforuseincoldclimates(below−10°Cinwinter).4.1.2TypeW,intendedforuseinwarmclimates(above−10°Cinwinter).4.2Grades:4.2.1GradedesignationsrepresentdifferingdegreesofhardnessinaccordancewithTestMet...
