Designation:D3369–01StandardSpecificationforPolytetrafluoroethylene(PTFE)ResinCastFilm1ThisstandardisissuedunderthefixeddesignationD3369;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1ThisspecificationcoversPTFE-fluorocarbonresincastfilminthicknessesfrom0.025to0.127mm(0.001to0.005in.).1.2PTFEfilmandsheetaremadebyseveraldifferentprocessesandthepropertiesoftheproductsreflectboththedifferentstartingpolymersandthedifferentprocesses.Proper-tiesthatareaffectedinclude,butarenotlimitedto:tensilestrengthandelongationatbreak,porosity,anisotropy,andmolecularweight.ArelatedstandardisSpecificationD3308.Itisimportanttoexamineeachoftheotherstandardstoselecttheoneappropriatefortheapplication.1.3ThevaluesinSIunitsaretoberegardedasstandard.Theunitsgiveninparenthesesareforinformationonly.NOTE1—ThereisnosimilarorequivalentISOstandard.1.4Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportion,Section7,ofthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimita-tionspriortouse.2.ReferencedDocuments2.1ASTMStandards:D149TestMethodforDielectricBreakdownVoltageandDielectricStrengthofElectricalInsulatingMaterialsatCommercialPowerFrequencies2D374TestMethodsforThicknessofSolidElectricalInsu-lation2D618PracticeforConditioningPlasticsforTesting3D792TestMethodsforDensityandSpecificGravity(Rela-tiveDensity)ofPlasticsbyDisplacement3D883TerminologyRelatingtoPlastics3D1389TestMethodforProof-VoltageTestingofThinSolidElectricalInsulatingMaterials2D3308SpecificationforPTFEResinSkivedTape4D3892PracticeforPackaging/PackingofPlast...
