RTJ GASKET ACCORDING TO ASME B16.20 & API 6A R/RX/ ... 2.304,316,321,347,F5,ocr13,CS,SI ,sof RTJ GASKET1.Type: R,BX,RX,IX2 Shape: octagonal, oval, lens3 ... )6.Standard: ASME B16.20 HG20612 HG206337.Material: carbon steel, soft iron, inconel625, M-400, C-276, 10#,ss316,ss304.8.Application ...