... is usually wound by stainless steel, 304,304L,316,316L,321,Ta Mon400, Inconel, asbestos (graphite, PTFE, mica, ceramic) tape used ... outer ringsSizemmThicknessmmNameCodeV-typeW-type6000Basic typeTongue and groove304(L) 316(L),321, Ti, Ni, Mon400Inconel, Hastelloy B,C Zr, 702,705AsbestosGraphitePTFEMicaCeramicASBFGPTFEMICACERCarbon steel304L ...