Filled PTFE compounds enhance mechanical properties including wear resistance, compression strength, and dimensional stability compared to virgin PTFE while maintaining cryogenic temperature capability. Common fillers include glass fiber for strength, carbon for conductivity and wear resistance, and various minerals optimizing performance for specific operating conditions and pressure... https://globalsealstech.com/product-category/oil-gas-seals/api-6d-ball-valve-and-lng-seals/