The polytetrafluoroethylene for short"PTFE(Telfon)or F4",commonly called as"Plastic king".PTFE have some excellent properties of enduring chemeistry&corrosiveness,dielectric,non-ageing,airtightness,hight lubricity and non-stick.It has a wide range of practicable temperature from -180 degrees～+250 degrees and a wax-like surface to which anything hardly sticks and thelowest coefficieng of friction of all known solid materials。Because it has these fine and unique comprehensive performance , there is position that can't replace in all solid plastics , use the most extensive use to be most. Apply to the chemical machinery mainly, electric& electron, metallurgy is smelted, oil refining , national defence spaceflight ,instrument and apparatus , metal surface , textile , coloured smelt , steel , atomic energy , high pure production (such as ion membrane electrolytic), glue such trades as thick supplies transporting and operating , slip resistance of the bridge , pharmacy , medical treatment , food ,etc
The polytetrafluoroethylene (PTFE) is usually made into various kinds of excellently, Rod,Tube,Sheet,Tin film, Gasket,Shaped parts,Braided packing,Tape,Tape Thread Sealing and Filled Products, etc.

Corrosiveness--It is not corroded and included Strong oxidant,reducing agent,water and function of different organic solvent by any chemical medicines besides alkali metal and element and Fluorine, ability strong acid alkali and have extremely strong chemical stability.
Enduring high and low temoerature--The working temperature that but uses- 190 to +260 degrees Centigrade has good mechanical toughness at the same time,When even lowest working temperature- 190 degrees Centigrade, can keep 5% of the extending rate.
Enduring non-ageing--Because it enduring climate,irradiation (Do not receive oxygen, ozone, ultraviolet function) and lower permeability expose to the atmosphere for a long time, the surface and performance still keep intact, it is unlikely to be damaged.
Insulating--It is strong to lie between electric performance and high to wear the voltage, free of the environment and frequency, dielectric constant stability and value are minimum within the range of broad frequency, can the resistance of volume be up to 1018 Ohm .Cm.
Non-stick--It is the solid material that a kind of surface tension can be minimum,The known solid material can't be glued and attached to its surface.
Uncombustibility--Restrict oxygen index under 90
Self-lubricity--Having the minimum coefficient of friction in all solid materials, the very ideal one does not have oil lubrication material.