Rubber alone does not offer as good a corrosion resistance as polytetrafluoroethylene (PTFE). There are three types of PTFE: glass-filled, graphite-filled, and virgin PTFE.
This material can be used to create the following items: Wedges, O-rings, V-rings, bellows, gaskets, and other items.
| Parameter | Unit | Virgin PTFE | Glass Filled PTFE | Carbon Filled PTFE |
| Density | g/cm3 | 2.2 | 2.3 | 2.08 |
| Tensile Strength | MPa | 30 | 15 | 13 |
| Max. Working Temperature | oC | 260 | 260 | 260 |