... .304,SS316L.CS 2,Graphite or asbetos filling 3,ISO9001:2008certified 4 Hight quanlity good se grooved metal gasket Spiral wound gasketSpecificationQS ... (L);316(L);312;317(L);31803MonelTi,NiINCHast.C/BZr702etc.Graphite,PTFE,Asbestos Non-asb Mica,etcCS304(L)316(L)321 ... ringsColor cord as ASME B16.20 on request corrugated metal graphite gasket