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Given the diversity in automotive and mechanical applications, a number of different PTFE seal dimensions have been developed – each with it’s own unique property. When we cross these dimensions with the different PTFE grades, we end up with potentially hundreds of seals. Thus, choosing the right seal is important and a lot of thought needs to go into the same, before a decision is made.


Types of PTFE seals

Finger Spring

This is mainly used in dynamic applications, has good sealing and a low coefficient of friction

Coil Spring

This is designed for more static or slow dynamic applications. It is not as flexible as the finger design – owing to the fact that the spring is coiled and more rigid as a result.

Double Coil Spring

A more augmented version of the single coil – this is designed for purely static applications, such as cryogenics.

O-ring Energised

This can be used in both static and dynamic applications and offers a good balance between the seal-ability of the coil energised seal and the flexibility of the finger spring.

Rotary Lip Seals

Lip seals are used primarily to seal rotary elements such as shafts and bores. They provide a self-lubricating medium between (usually) two metal elements – allowing for both smooth rotation and good sealing.

Properties Benefits
Self-lubrication Long-term dry running with low-maintenance
Superior strength-to-weight ratio Minimal load on the solar tracker, leading to increased efficiency
UV resistant Impervious to prolonged exposure to sunlight
Moisture-proof No swelling due to humidity, allowing for smooth functioning round the year

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