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1、90063790003854190Ei--`,,`-`-`,,`,,`,`,,`---GENERALMOTORSENGINEERINGSTANDARDSMaterialsandProcesses-GeneralFLEXIBLEEXPANDEDRUBBERMAiERlALSGM6066M1SCOPE.Thisspecificationdescribestherequirements3REQUIREMENTS.Alltestsshallbepeiforrnedaccord-forexpandedcellularmaterialstobeusedasasealagainstair,ingt
2、oASTMD1056at23+2Cand50%RHunlessdustand/orwater.Thematerialmayalsobeusedforcertainotherwisespecified.applicationsasasilencerorasaflexiblematerialforcoveringgaps,openingsandothernon-sealingtypeapplications.Materialspecificationsarebasedona6sigmalimitspreadindatafromaminimumof6productionlots.Newma
3、terials1.1Opencellmaterialsshouldbespecifiedusingtheappro-willbetentativelyapprovedbasedon1to3pilotlotsand1priateASTM,SAEorIS0methods.Theyarenotcoveredproductionlot.AsperASTMrequirements,eachdatapointunderthisspecification.perlotisbasedonameanof3datapoints.1.2Certainapplicationsmayrequiretheuse
4、ofanadhesive.3.1ShelfLife.ThematerialshallbepackedtopreventIfanadhesiveisrequired,anADHSuffixshallbeaddedafterpermanentdeformationwhenshippedorstored.Itmustmeetthebasicspecificationandtypenumber.allrequirementsofthisspecificationafter6monthsstorageat50c.1.3Certaininteriorpartswillrequirealowfri
5、ctioncoatingtoreducefrictionorgrabbetweenthesealandthesubstrate.3.2CompressionDeflection.ValuesshallbedeterminedatWhenthiscoatingisrequired,aCOsuffixshallbeaddedafter50%compression(nopreflex)after1minuteatacompres-thespecificationandtypenumber.sionrateof50.8mm/minute.1.4NotetoUsers:Toproperlyus
6、eGM6086M,thefollow-3.2.1Samplesshallbe50x50mmwithaminimumsampleinginformationmustbeaddedtotheengineeringdrawing.thicknessof3.2mm.Alladhesivesurfacesshallbedustedwithtalctopreventadhesiontothecompressionplates.1.4.1Specifymaterial,e.g.Nitrile,EPDM,etc.TypeIA(SuperSoft).....................5.OOto
7、21.OOkPa1.4.2Specifydensitywithtolerance.TypeIB(Soft)...........................21.01to48.00kPaTypeII(Medium).......................48.01to97.00kPaTypeIIIA(Hard)......................97.01to172.00kPa1.4.3IndicatetheADHorCOsuffixif
