Asbestos Packing with PTFE Impregnation, Braided from high quality asbestos fiber impregnated with PTFE. It has anti-corrosive and long service properties. Economic packing. SUNWELL P805S -- Asbestos Fiber Packing reinforced with SS Wire SUNWELL P805R -- Asbestos Fiber Packing with Silicone Rubber Core More information for Asbestos Packing with PTFE Impregnation, please contact with Sunwell Sealing Co.