Designation:F2523−13StandardPracticeforBlowoutResistanceofRoom-TemperatureVulcanizedElastomers1ThisstandardisissuedunderthefixeddesignationF2523;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticeprovidesameanstodeterminetheblowoutresistanceofaroom-temperaturevulcanizedelastomersystem(RTV)usingastandardfixture.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D907TerminologyofAdhesivesD1566TerminologyRelatingtoRubberF2468ClassificationforSpecifyingSiliconeAdhesivesandSealantsforTransportationApplications2.2SAEStandard:SAEJ1199MechanicalandMaterialRequirementsforMet-ricExternallyThreadedSteelFasteners33.Terminology3.1Definitions—SometermsinthispracticearedefinedinTerminologiesD907andD1566.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1blowout,n—disruptionoftheuncuredRTVintegrityinajointfromsystempressurizationresultinginsuddenlossofpressure.3.2.2T–joint,n—interfacecreatedinasealingsurfacewherethreestructuralcomponentsmeet.3.2.2.1Discussion—Thisinterfacemayexistasasmallgaprequiringamaterialsuchasroom-temperaturevulcanizedelastomer(RTV)toseal.3.3Acronyms:3.3.1RTV—room-temperaturevulcanizedelastomer4.SummaryofPractice4.1CondensationcuresRTVsasaone-componentsystemcurewhenexposedtomoistureintheambientairorastwo-componentsystemswhenthosecomponentsaremixedtogether.RTVsareoftenusedtosealjointswherethreeflangesmeet(Tjoints)suchasanautomotiveengine’sfrontcover,engineblock,andoilpan.Becauseofmachiningandassemblyt...
