PTFE filament packing is braided with PTFE filament which is impregnated piece by piece with PTFE dispersion. Flexibility,PTFE filament packing has almost complete chemical inertia.PTFE filament packing has dimensional stability.PTFE filament packing has low friction coefficient to compression. And PTFE filament packing has excellent resistance to compression.PTFE filament packing are one of the best available packing in the industrial field.PTFE filament packing is suitable for all the chemical compounds (excepting cast alkaline metals and the gaseous fluorine).PTFE filament packing can be used in alternative and rotary motions shafts operating at high peripheral speed, rod, pistons, valve stems, expansion joints, etc.