Designation:F145−72(Reapproved2016)StandardPracticeforEvaluatingFlat-FacedGasketedJointAssemblies1ThisstandardisissuedunderthefixeddesignationF145;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticepermitsmeasurementofgasketcompres-sionresultingfromboltloadingonaflat-facejointassemblyatambientconditions.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E171PracticeforConditioningandTestingFlexibleBarrierPackaging3.SummaryofPractice3.1Thegasketcompressionandflangedistortionareob-tainedfromcompressed-thicknessmeasurementsoncylindri-callyshapedsoft-solderplugs(50-50lead-tinbyweight)insertedintoholes,drilledorpunchedthroughthegasketinthethicknessdirection.Initialcompressionisaccomplishedintheflanged-jointassemblywhentheboltsareloadedatambienttemperature.Solder,beinginelastic,willremainatthecom-pressedthicknessofthegasketafterthejointissubsequentlydisassembled.4.SignificanceandUse4.1Gasketcompressionsproducedbyboltloadsinaflangedjointareimportantintheapplicationengineeringofajointassembly.Theyarerelatedtotheabilityofagaskettoseal,tomaintaintightnessonassemblybolts,andtoavarietyofothergasketpropertiesthatdeterminetheservicebehaviorofajointassembly.Thus,beingabletodeterminethedegreeofcompressioninagasketundertheboltloadingwillpermitonetomakequalitativepredictionsofthebehaviorofajointassemblywhenitcomesincontactwiththeapplicationorserviceenvironment.Withtheplugtest,bendingofaflangefacingbetweenboltcenterscanbemeasure...
