RTJ BGASKET 1.Certificate:API 6A, ISO9001:2000 2.Mat.:D,S,304,316,321,347,630,INCONEL600 3.Pressure: PN2. ... #,ss316,ss304.8.Application: W/N flange, gate valve, oil&gas industry, oil christmas tree, wellhead assembly9.Hardness and Temperaturematerialmax hardness ... (degrees)soft iron90450carbon steel120450F51150540304160600316160600 API 6A R RX BX all series gaskets