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Simrit Develops New FKM Compound to Withstand Extreme Temperatures and Fluids in Turbocharger Applic

Compound resistant to lubricant and coolant reaching 180 degrees Celsius

Simrit, the industrial sealing division of Freudenberg-NOK Sealing Technologies, has developed an advanced fluoroelastomer material – FKM (80 FKM 233877) – to withstand high temperature coolant and lubricant used in engines of industrial drive technologies. This FKM is the first material that is resistant to coolant reaching temperatures of 180 degrees Celsius, while also withstanding state-of-the-art motor oils with aggressive additives.

“Increasingly high temperatures and simultaneous contact with coolant and lubricant are the growing demands that have to be met when sealing wet cylinder liners inand aroundturbochargers,” said Joel Johnson, global vice president of technology, Simrit. “Standard FKM O-rings can only be used in cooling water at temperatures of up to 125 degrees Celsius. Simrit’s Coolant FKM O-rings can be used permanently at temperatures of up to 150 degrees Celsius, as well as for short periods at temperatures reaching 180 degrees Celsius.”

Developed specifically to meet the strict requirements of internal combustion engines, this FKM’s long-term compression set in coolant reaching 150 degrees Celsius is superior and has been successfully tested against a competitive material in a period lasting 1,000 hours. Manufactured entirely without lead, the new O-ring material is also safe for the environment throughout its entire lifecycle, from compounding and processing to the finished product and, ultimately, to safe recycling.

Simrit’s new Coolant FKM O-rings will be on display at MDA India on Dec. 6 to 9 at the Bangalore International Exhibition Centre in India. Visit the Simrit booth (D402) in Hall 1 for additional product information or to speak with a Simrit expert.

Simrit is part of Freudenberg-NOK Sealing Technologies and offers an extensive portfolio of precision-manufactured products for the aerospace, agriculture, appliance, construction, energy, fluid power, mechanical power generation, mechanical power transmission and recreation markets. Simrit’s global sales exceed $1.3 billion. For more information, visit the Simrit website at