The Cryogenic Double-Piston PTFE Spring Energized Seal is used for LNG ultra-low temperature (-196°C) pump valve. The temperature can reach -200°C or even lower, and the pressure can reach 2500LB or even higher. It is widely used in the cryogenic valve of LNG industry. It's mainly composed of PTFE or high molecular polyethylene jacket + stainless steel support + alloy spring.