The PTFE O-ring coating combines the elasticity and sealing properties of rubber with the chemical resistance of Teflon.

It is composed of an inner core made of silicone or fluororubber and a relatively thin Teflon FEP or Teflon PFA outer cover.

This rubber Teflon sealing ring has good resistance to swelling and chemical stability.

The friction coefficient of Telfon FEP/Teflon PFA is very small (only 0.1~0.2), and it has excellent resistance to gas permeation, which makes the sealing ring truly applicable in harsh environments.