... 215,BX150-303,Inch1/2"-24" Ring joint gasket (RTJ gasket) are manufactured in accordance with JPI-7S23, ... Pressure:PN2.0 (Class150)-PN42.0(Class2500)6.Standard:ASME B16.20 7.Material:carbon steel,soft ... -400,C-276,SS316,SS3048.Application:vale,gate,flange,oil&gas industry, 9.Hardness and TemperatureMaterialMax Hardness ... at rilson com cn Ring Joint Gasket (RTJ gasket)(Flange RTJ Gasket)