C-seal trim is available for HPD and HPAD valves with
port diameters from 2.875 inches through 5.375
inches.
With C-seal trim, a balanced valve can achieve
high-temperature, Class V shutoff. Because the C-seal
plug seal is formed from metal (N07718 nickel alloy)
rather than an elastomer, a valve equipped with the
C-seal trim can be applied in processes with a fluid
temperature of up to 593C (1100F).