... not sensitive to the surface defect of flange clamping plane, and not binding the flange sealing surface, convenient to be dismantled as ... materialFiller materialInner, Outer ring materialNormal ThicknessGasketsRingsBasic type CS,304(L)SS,316(L)SS,321SS,347LSS,Monel,Titanium,Inconel,Hastelloy B/C, ... T4719-92,SH3407-96,HG20610-97,JB/T90-94,ANSI,API,JPI,JIS,DIS,etc.standards or clients request. Spiral ...