PCTFE ball seat seals for API 6D valves Singapore offer superior dimensional stability and low permeability in LNG at -162°C to -196°C. Reinforced with glass or carbon fillers for pressure resistance up to Class 2500. Singapore regasification terminals use these seals in emergency shutdown valves (ESDV) for rapid, tight closure during upset conditions. https://globalsealstech.com/product-category/oil-gas-seals/api-6d-ball-valve-and-lng-seals/