HTMS Futom recommends to heat treat all non spring energised Metal C Rings. High performance HTMS Futom metal seals will perform better in the heat treated condition.
Metal O-Rings and and some Spring Energized C-Rings made from austenitic stainless steels, are not precipitation hardenable. These seals can only be supplied in the work hardened condition.
Heat treatment is mostly not required
for Spring Energised C Rings and Metal O Rings.
Metal C-Ring for Internal Pressure (CI) and External Pressure (CE) are designed for high pressure (system pressure energised). They require low bolting load and have good spring back.
