... inner ring and outring graphite tape,PTFE tape spiral wound gaskets semi-metallic gasket Sprial wound gasketDescription:Spiral-Wound gasket is formed of ... (L);316(L)321;317L31803Monel,Ti,NiINCHast.C/BZr702 etc. Graphite, PTFE,AsbestosNon-asbMica,etcCS,304(L), 316(L),321;317L31803Ti ... ORWith outer ring SIN100 IORWith inner & outer rings Spiral Wound Gasket with graphite inner and out ring