PTFE composites in Well Service Pump Packing reduce friction in high-speed plungers, filled with graphite or glass for strength to 260°C. In junk rings, they wipe proppant without scoring. Inert to chemicals. Limitations: creep, needing brass backups. Fluoroloy AO2 for low temps. Trelleborg’s PTFE V-rings endure 60% solids. In CO2 injection pumps, cut plunger wear by 70%. Ideal for ch... https://globalsealstech.com/product-category/oil-gas-seals/high-pressure-water-pump-seals/