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Understanding seal and gasket material temperature ranges

What temperatures will various seal and gasket materials withstand?  The answer is not always clear cut.  


Lauren provides material expertise through its sister company LMI Custom Mixing as well as a full-scale R&D test lab. 

Exposure to extreme temperatures can affect the long-term physical properties of a seal or gasket. 

When evaluating temperature ratings, the first limiting factor is the material itself. 

For example, EPDM might be considered for applications that reach up to 250°F to 275°F.

But for higher temperatures, silicone is often the alternative. It has the potential to withstand conditions of 400°F to 450°F.

However, these are only general rules. The acceptable operating temperatures for a seal or gasket will depend on a number of variables.   

These include part design, the specific end-use conditions and a material's unique compound formulation. 

In some cases, a part may withstand intermittent temperature extremes, but performance is compromised under continuous exposure.  

In selecting a compound, engineers will evaluate all performance requirements. Typically, the best course of action is to identify a compound that will provide a balance of the properties desired for an application.

It is often possible to raise or lower some ratings for performance properties to acceptable levels through creative compounding.

This is best accomplished by consulting with Lauren's engineering team about your project's specific needs.

Learn More

Explore our materials to review and compare general performance ratings.

See our UL listed materials.

Download our Seal and Gasket Design Guide:

Seal & Gasket Design Guide