... inner ring, with outer ring, with inner and outer rings, and gasket for heat exchange equipment; Metal Gasket.TYPES ... 1Cr18Ni9Ti, 304, 316L Monel alloy, C-276, and zirconium;Packing: expandable graphite, PTFE and asbestos;SERVICE TEMPERATURE: -200~870°C;SERVICE ... flange joints of pipelines, valves, pumps, pressure vessels, and heat exchange equipment, etc. of various media; SPECUFICATIONS AVAILABLE ...