Designation:D6546−00(Reapproved2010)StandardTestMethodsforandSuggestedLimitsforDeterminingCompatibilityofElastomerSealsforIndustrialHydraulicFluidApplications1ThisstandardisissuedunderthefixeddesignationD6546;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThesetestmethodscovertheprocedureformeasuringphysicalpropertiesofelastomersealsintheformofO-ringsafterexposuretoindustrialhydraulicfluidsandthermalaging.Themeasuredpropertiesarethencomparedtothephysicalpropertiesofelastomersealsthathavenotbeenexposedtotheindustrialhydraulicfluidsandthermalaging.ThechangesinthesepropertiesformabasisforassessingcompatibilitywhenthesechangesarecomparedagainstthesuggestedlimitsinTable1.1.2WhilethesetestmethodsinvolvetheuseofO-rings,theycanalsobeusedtoevaluatethecompatibilityoftheelastomericcompoundsofspecialtysealswithindustrialhy-draulicfluidsandtheirresistancetothermalaging.ThecompoundscanbemoldedintoO-ringsforevaluationpur-poses.1.3ThesetestmethodsprovideproceduresforexposingO-ringtestspecimenstoindustrialhydraulicfluidsunderdefiniteconditionsoftemperatureandtime.TheresultingdeteriorationoftheO-ringmaterialisdeterminedbycompar-ingthechangesinworkfunction,hardness,physicalproperties,compressionset,andsealvolumeafterimmersioninthetestfluidtothepre-immersionvalues.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D395TestMethodsforRubberProperty—CompressionSetD412TestMethodsforVulcanizedRubberandThermoplas-ticElastomers—TensionD471Tes...
