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High-low temp capability for jet engine seals

A world-class aircraft engine manufacturer required O-ring seals for use in various locations within the transmission system of their prototype jet engine.


Temperatures can reach +330°C and failure of seals could lead to leakage of highly combustible fluids, especially aviation fuel. An elastomer capable of operating within temperature extremes of -45°C to +330°C (-49°F to 626°F) with excellent resistance to oil, fuels and lubricants was required.


PPE’s Perlast® G75B material was supplied and installed over 2 years in a live engine test programme. It was rated to be the highest temperature elastomer and proven to work in highly aggressive aviation media.


A huge reduction in the risk of highly flammable liquid leakage which enabled the continued development of the engine.

How can we help? Contact our aerospace and defence sealing experts to discuss your requirements, or start a discussion online.

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