In Australia’s high‑pressure gas pipelines and HPHT projects, API 6D ball valves rely on reinforced soft‑seated seals and backup rings capable of withstanding ASME classes 900–2500 without extrusion. These seals are often formulated with high‑strength PTFE or PEEK, sometimes loaded with graphite or carbon to enhance thermal stability, creep resistance, and mechanical strength. Austral... https://globalsealstech.com/product-category/oil-gas-seals/api-6d-ball-valve-and-lng-seals/