... .Mat.:D,S,304,316,321,347,630,INCONEL600 3.Pressure: PN2.0-PN42.0 Ring joint,RX gaskets high pressure1 ... -303, inch 1/2-inch244.Certificate:API 6A, ISO9001:20005.Pressure: PN2.0(CLASS150)-PN42.0(CLASS2500)6.Standard: ASME B16 ... (degrees)soft iron90450carbon steel120450F51150540304160600316160600 API 6A R RX BX all series gaskets