by Denise Sullivan Denise Sullivan 1 Comment

The automotive industry constantly evolves by introducing new technologies designed to improve safety, comfort, and performance. One such technology that has garnered significant attention recently is using high-temperature materials for seals and gaskets. These materials play a critical role in ensuring that engines perform optimally by preventing leakage while providing excellent resistance to heat, wear, and creep. Polyetheretherketone (PEEK) has emerged as a leading choice among these high-temperature materials due to its superior properties.


PEEK is a thermoplastic material with unique properties that make it suitable for automotive construction. The material exhibits excellent mechanical strength, dimensional stability at high temperatures, chemical resistance, and electrical insulation properties. PEEK also has remarkable resistance against wear and creep, making it an ideal material for applications where durability is essential.

PEEK Automotive Seals

One primary application of PEEK in automotive construction is the development of seals used in internal combustion engines. The sealing rings used in engines are critical as they prevent fluids from leaking out and keep contaminants from entering sensitive engine parts. Sealing rings must withstand extreme temperatures generated by combustion while maintaining their shape and sealing ability.

PEEK-based seals have been found to provide exceptional leakage stability at high temperatures, making them ideal candidates for sealing rings in internal combustion engines. In addition, PEEK-based seals exhibit low friction coefficients, which help reduce energy consumption during operation.

Automotive Cylinder Head Gasket

Another application is the development of cylinder head gaskets which require good heat resistance and wear behavior due to their proximity to hot engine components such as cylinders and exhaust systems. Cylinder head gaskets must withstand extreme temperatures without degrading or losing their ability to seal off different chambers within the engine block.

A compound based on PEEK combined with polytetrafluoroethylene (PTFE) has been developed specifically for cylinder head gasket applications, with good results recorded so far. This material has been found to have good resistance against heat, wear, and tear while also exhibiting excellent replaceability. Using the PEEK-PTFE compound in cylinder head gaskets eliminates the risk of contact corrosion which is a significant concern when using traditional metal gaskets that can cause damage when they come into contact with other engine components.

The benefits of using PEEK-based materials in automotive construction are numerous and significant. For instance, using seals and gaskets can help improve engine performance by reducing energy consumption due to their low friction coefficients. PEEK-based materials also require less maintenance than traditional metal seals and are prone to corrosion and wear.

In conclusion, using high-temperature materials such as PEEK in automotive construction represents a significant technological advancement with immense potential for improving vehicle performance and reliability. PEEK-based seals and gaskets have been found to provide exceptional leakage stability at high temperatures, making them ideal candidates for use in internal combustion engines. Cylinder head gaskets based on a compound consisting of PEEK and polytetrafluoroethylene (PTFE) have shown great promise as they offer good resistance against heat, wear, and tear while exhibiting excellent replaceability properties.

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