... elastic-plastic 2,chemical stability impermeable 3,lower coefficient of friction high quality PTFE Packing for sealing 1.Our ... plastic, chemical stability, impermeable, lower coefficient of friction, wear rate and good heat resistance.Type of packing: asbestos braided packing with PTFE ... which can be used for pumps in all types of industry .such as chemicals, petrochemicals, sewage treatment, paper ...