Designation:D3767−03(Reapproved2020)StandardPracticeforRubber—MeasurementofDimensions1ThisstandardisissuedunderthefixeddesignationD3767;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thispracticeisintendedforuseindeterminingthegeometricaldimensionsofrubberproductsandspecimensforphysicaltests.Thispracticedescribesproceduresfordetermin-inglength,width,thickness,diameter,andcircumference.Thispracticedoesnotcoversamplingofmaterialsorproducts,orlocationswhereasampleistobetaken.1.2Thevaluesstatedineitheracceptablemetricunitsorinotherunitsshallberegardedseparatelyasastandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother,withoutcombiningvaluesinanyotherway.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1415TestMethodforRubberProperty—InternationalHardnessD3183PracticeforRubber—PreparationofPiecesforTestPurposesfromProducts3.SummaryofPractice3.1Specificproceduresareoutlineddependinguponsize,texture,andshapeofthetestspecimensundergoingmeasure-ment.3.1.1ProcedureAencompasseslineardimensionsupto30mmusingaflat-footedmicrometeronflatsheetsandtestspecimens.3.1.2ProcedureA1encompassesthicknessdimensionsup...
