Designation:D2527−83(Reapproved2011)StandardSpecificationforRubberSeals—SpliceStrength1ThisstandardisissuedunderthefixeddesignationD2527;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversthestrengthandappearanceofthespliceinvulcanizedrubber-sealmaterialofanysize,type,orcross-sectionalshape.1.2Manytypesandvarietiesofsealsareusedinservicesofalldegreesofseverity.Insomeinstances,hollowtubingissplicedandusedasaseal.Itisalsopossibletohavesealsofirregularcrosssections,ormadeofpolymerswhich,duetotheirnature,ornotconducivetoahigh-strengthsplice,althoughtheywillperformsatisfactorilyintheirintendedapplication.1.3Sealsareexposedinservicetoawidevarietyofmediaatvarioustemperatures.Theeffectofsuchmediaonthesplicedareamustbeconsidered.Detailsofthetestprocedurestoevaluatetheeffectofthemediashallbeagreeduponbythepurchaserandselleraspartofthepurchasecontract.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D412TestMethodsforVulcanizedRubberandThermoplas-ticElastomers—Tension3.Classification3.1Inordertoprovideforthevarioustypesofsealsandrequirements,threeclassesofspliceshavebeenestablished:3.1.1Class1coverssplicesinsealsnothavingasolidcrosssectionbutanirregularcrosssection,ofapolymernotconducivetoahigh-strengthsplice,orformoderateservicerequirements.3.1.2Class2coverssplicesinsolidsealsofashapeandcompositionconducivetohigh-strengthsplices.Thisclasscoversapplicationsrequiringhigh-splicestrengthorservicerequirements....
