1.JIS Standard 2.with inner and outer ring 3.cs ring aafiller304+FG ... ,etcCS,304(L), 316(L),321;317L31803Ti,NiINCHast. Monel,Zr7023.2 4.5(0.175”) 6.42 3(1/8”) 4 ... ,etcCS,304(L), 316(L),321;317L31803Ti,NiINCHast. Monel,Zr7023.2 4.5(0.175”) 6.42 3(1/8”) 4 ... sealing gasket manufacturer,More than 10years produce experience for JIS swp gaskethuangxiangyan at jssaling com JIS ...