Designation:D2686−19StandardSpecificationforPolytetrafluoroethylene-BackedPressure-SensitiveElectricalInsulatingTape1ThisstandardisissuedunderthefixeddesignationD2686;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisspecificationcoverselectricalinsulatingtapecon-sistingofapolytetrafluoroethylene(PTFE)filmcoatedononesidewithapressure-sensitiveadhesive.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.NOTE1—ThisstandardissimilartoIEC60454-3-14.1.3Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1000TestMethodsforPressure-SensitiveAdhesive-CoatedTapesUsedforElectricalandElectronicApplica-tionsD1711TerminologyRelatingtoElectricalInsulation2.2IECStandard:IEC60454-3SpecificationsforPressure-SensitiveAdhesiveTapesforElectricalInsulation33.Terminology3.1Definitions—Fordefinitionsoftermsusedinthisspecification,refertoTerminologyD1711.4.Classification4.1ThisspecificationcoverstwotypesofPTFEtapeinvariousthicknesses,asfollows:4.1.1TypeI—Standardbackingcoatedwithasiliconead-hesive:4.1.1.1GradeA—0.050mm(0.002in.)backingthickness,and4.1.1.2GradeB—0.125mm(0.005in.)backingthickness.4.1.2TypeII—Bondablebackingtapecoatedwithasiliconeadhesive:4.1.2.1GradeA—0.050mm(0.002in.)backingthickness,and4.1.2.2GradeB—0.125mm(0.005in.)backingthickness.5.MaterialsandManufacture5.1Thetapeshallcompriseabackingconsistingofafilmoftetrafluorethylenepolymerononesideofwhichhasbeenap...
