Seat seal materials for API 6D LNG ball valves utilize advanced polymers and composites maintaining flexibility and resilience at cryogenic temperatures. Polytetrafluoroethylene (PTFE) and filled PTFE compounds provide excellent low-temperature performance, chemical inertness, and low friction characteristics enabling smooth valve operation. Glass-filled, carbon-filled, or bronze-fill... https://globalsealstech.com/product-category/oil-gas-seals/api-6d-ball-valve-and-lng-seals/