... sealing material, and it is made by braiding expanded PTFE strips. PTFE fiber packing has low friction coefficient, abrasion-resistance, corrosion-resistance ... packing, carbon fiber graphite braided packing, graphite packing, flexible graphite compound packing, asbestos packing coated with F4, pure F4 packing covered with asbestos, carbon fiber F4 fiber packing, pure F4 packing. PTFE Braided Packing ...