Designation:D3147−21StandardTestMethodforTestingStop-LeakAdditivesforEngineCoolants1ThisstandardisissuedunderthefixeddesignationD3147;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversscreeningproceduresforthepreliminaryevaluationofleak-stoppingmaterialsintendedforuseinenginecoolingsystems.(Heavy-dutyusersarereferredtoX1.2.21inSpecificationD4485foradditionalinformation.)1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesafterSIunitsareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Specificwarningstatementsaregivenin10.1.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1176PracticeforSamplingandPreparingAqueousSolu-tionsofEngineCoolantsorAntirustsforTestingPurposesD4485SpecificationforPerformanceofActiveAPIServiceCategoryEngineOilsD4725TerminologyforEngineCoolantsandRelatedFluidsE11SpecificationforWovenWireTestSieveClothandTestSieves3.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1leaking—frequentdropsforming(morethan5drops/min).3.1.2sealed—completelypluggedwithnoleakingorseep-ing.3.1.3seeping—occasionaldropsforming(fewerthan5drops⁄min).3.2Fordefinitionsoftermsusedinthistestmethod,refe...
