PTFE-based seals dominate LNG ball valve applications due to polytetrafluoroethylene's exceptional low-temperature flexibility, chemical inertness, and broad temperature range from -320°F to 500°F. Virgin PTFE or filled compounds incorporating glass fibers, carbon, or other reinforcements provide the low-friction, reliable sealing essential for quarter-turn ball valve operation in cry... https://globalsealstech.com/product-category/oil-gas-seals/api-6d-ball-valve-and-lng-seals/