PTFE coated O ring

1、 Polytetrafluoroethylene, referred to as PTFE or F4. Polytetrafluoroethylene is a polymer of tetrafluoroethylene.
Teflon (Teflon or PTFE), commonly known as "plastic king";；
2、 PTFE is almost insoluble in all solvents, with excellent excellent overall performance, high temperature, corrosion resistance,
non-stick, self-lubricating, excellent dielectric properties, very low coefficient of friction;
3、Advantages of PTFE：
1) high temperature - the use of operating temperature up to 250 ℃.
2) low temperature resistance - with good mechanical toughness; even if the temperature dropped to -196 ℃, can also maintain a 5% elongation.
3) Corrosion resistance - for most chemicals and solvents, showing inert, strong acid and alkali resistance, water and a variety of organic solvents.
4) resistant to climate - the best aging life in plastic.
5) high lubrication - is the lowest coefficient of friction in solid materials.
6) No adhesion - is the smallest surface tension in the solid material and does not adhere to any substance.
7) non-toxic - with physiological inertia, as artificial blood vessels and organs long-term implantation of the body without adverse reactions.
8) Electrical insulation - can withstand 1500 volts high voltage.