In Industry, there are 5 main types of PTFE Gasket, including:
- Virgin PTFE Gasket: hard, cheapest.
- Expanded PTFE Gasket: it has some flexibility.
- Molded PTFE Gasket
- PTFE Envelope Gasket
- Fillers Filled PTFE (Graphite filled PTFE)
Each type of PTFE gasket has unique characteristics tailored to specific applications:
Virgin PTFE, extremely pure, offering excellent chemical, thermal, and electrical resistance. Ideal for applications where contamination is critical, but its rigidity may limit its use in certain geometries.
Expanded PTFE, flexible and compressible, resistant to abrasion and impacts. Particularly suitable for dynamic seals, thermal expansion compensation, and irregular surfaces.
Molded PTFE, provides high dimensional precision and can be reinforced with fibers to enhance mechanical strength and rigidity. Used for precision parts, static seals, and demanding applications requiring wear resistance.
PTFE Envelope Gasket, combines the mechanical strength of metal with the chemical inertness of PTFE. Ideal for high-pressure and high-temperature applications, as well as situations requiring significant rigidity.
Filled PTFE, improves tribological properties (wear resistance, friction coefficient) and can also modify other characteristics such as thermal conductivity. Used in applications where lubrication is critical, such as bearings, or to reduce the coefficient of friction.