Description PTFE O-Rings are used in where we need excellent chemical resistance and non-compressible. It is also very tough and abrasive resistant. Application & Usage PTFE O-Rings may not get easily sealed when compared to other polymers. Its outstanding tear resistance and abrasive resistance result in its slippery surface properties that make it advantageous for use in seals in moving systems such as mass spectrometer probes and valves. Materials used Virgin PTFE