Oil seals | high temperature seals | American High Performance Seals

Effect of Operating Parameters

• Speed is related to the generated friction between the seal and the dynamic sealing surface and, therefore, affects the performance of the seal. Low speeds will cause increased friction; high speeds will cause a breakdown in the oil film between the seal and the sealing surface, causing the seal to run dry, thus leading to premature seal failure.
• The frictional heat generated when the seal operates may accelerate hardening of the seal material, particularly in the contact area between the sealing lip and the sliding surface. This leads to cracks which become increasingly larger over time and ultimately result in seal failure. Therefore, to maximize the service life of a seal, as little frictional heat as possible should be generated in the contact area between the seal and the sliding surface.
• High pressure causes extrusion of the seal into the extrusion gap, which exists on the no-pressure side of the seal. The gap can be increased with a corresponding lowering of operating pressure or with the use of an anti-extrusion or back-up ring.
• High or low temperature beyond the seal material’s specified temperature range affects the seal significantly. The seal will become brittle if the temperature is too low or too high. Heat damage is irreversible and leads to reduced seal life.
• Higher temperature softens the seal/back-up ring material, resulting in greater seal extrusion and increased friction, leading to reduced seal life.

O-Rings for High-Temperature Applications

Finding o-rings for high-temperature seals is always a challenge. High heat can cause the o-ring's material to break down, resulting in leaks, product contamination, and complete seal failure. For long-lasting success, o-rings that can withstand extreme high-temperature applications use materials like flexible graphite and FFKM.

With competitive price and timely delivery, NNK sincerely hope to be your supplier and partner.

It can be tempting to use inferior, cheaper materials, but this route ultimately becomes more expensive and time-consuming. Having the proper o-ring in place in a high-temperature application reduces downtime and maintenance costs.

Getting that o-ring is now easier than ever! Marco Rubber offers various materials, durometers, sizes, and customizable options for high-temperature o-rings. Our team is dedicated to making your experience easy, no matter the regulations or performance requirements.

We have the largest inventory of specialty and standard sealing solutions with rapid delivery. For custom solutions, we have some of the shortest lead times on the market.

High-Temperature O-Ring Materials

What happens when you use the wrong o-ring material in a high-temperature application? The temperature damages the o-ring, making it hard and brittle. It will no longer compress, return to its original shape (compression set), and preserve the seal. In turn, this often causes leaks or complete seal failure, leading to expensive downtimes and potentially dangerous messes. For industries that are sensitive to contamination, like food and beverage or pharmaceuticals, this can result in microscopic contamination as the o-ring breaks apart.

Below are the materials we most commonly recommend for extreme high-temperature applications.

Contact us to discuss your requirements of high temperature oil seal. Our experienced sales team can help you identify the options that best suit your needs.

View our Material Selection Guide for more information on these and other popular sealing materials.

High Temperature Material Comparison

Markez®: The Ultimate High-Temperature O-Ring FFKM Material

Markez® was born from the needs of our customers: a versatile, customizable FFKM material available at an affordable price and rapid lead time.

This is our high-performance perfluoroelastomer (FFKM) material that offers unmatched value for the most demanding sealing applications. Markez® is a cost-effective alternative to other high-temperature FFKM materials. With nearly identical ingredients, Markez® offers top-of-the-line performance at a fraction of the cost.

Better yet, we keep Markez® stocked. If we don't have it on hand, we can get you exactly what you need fast.

Markez® is available in ultraclean formulas and more!

For more chinese engine oil sealinformation, please contact us. We will provide professional answers.