RTJ GASKET ACCORDING TO ASME B16.20 & API 6A R/RX/BX gasket ring 1.R,RX,BX ... type 2.304,316,321,347,F5,ocr13,CS,SI ,sof RTJ ... 105,RX20-215 BX150-303, inch 1/2-inch244.Certificate:API 6A, ISO9001:20005.Pressure: PN2.0(CLASS150)-PN42.0(CLASS2500) ... 400, C-276, 10#,ss316,ss304.8.Application: W/N flange, gate valve, oil&gas industry, oil christmas tree, wellhead ...