... ring, with inner and outer rings, and gasket for heat exchange equipment; Metal Gasket.TYPES OF GASKET: Basic type, with inner ring, with ... outer ring, with inner and outer rings, and gasket for heat exchange equipment;MATERIALS ADOPTED: Skeleton and ring, A3 OCr13 ... C;SERVICE PRESSURE: 32Mpa;MAIN PURPOSES: Static sealing at the flange joints of pipelines, valves, pumps, pressure vessels, and heat ...