Metallic O-Ring Gasket 1.shape:Octagonal, Oval or lens 2.type: ... 3.Material:carbon steel, soft iron, inconel600, M-400 Metallic O-Ring Gasket1.shape: Octagonal, Oval or lens2.type: R,BX ... , inconel600, M-400, C-276, and so on8. Application: W/N flange, gate valve, oil&gas industry, oil christmas tree, wellhead ... with API Standard and meet our customer's demands. Metallic O-Ring Gasket