When oil destroys seals.
When heat melts compounds.
When chemicals corrode everything in their path.

There’s one rubber that holds the line: FKM.

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Fluoroelastomers are the top tier of rubber technology. You may know them by the trade name Viton®, a fluoroelastomer family originally developed by DuPont that rose to prominence in aerospace, automotive and chemical industries from the 1950s onward.

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FKM was designed for a single mission: to perform where no other rubber can.

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It withstands continuous heat above 200 °C, with short-term peaks approaching 250 °C. It resists aggressive oils, fuels, solvents, acids and oxidizing media. It shrugs off ozone, atmospheric aging and even vacuum conditions that destroy other elastomers.

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Its power lies in its chemistry. Highly fluorinated polymer chains form a dense, chemically inert structure. Tightly packed and energetically stable, they resist swelling, softening and breakdown, even under heat, pressure and harsh media.

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That’s why FKM is trusted in the most critical systems, from aerospace fuel lines and flight-critical seals, to turbochargers and hot-oil components in vehicles and chemical valves and pumps in the most aggressive industrial environments.

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It also maintains dimensional stability. FKM resists compression set, holding sealing force even after thousands of hours under stress.

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But high performance has a price.

FKM is costly.

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And it is not invincible. It stiffens in the cold, typically below –15 °C, though special low-temperature grades can reach –40 °C. And while it resists most chemicals, it falters against hot water, steam, ketones and amines.

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Still, when failure is not an option, when reliability is mission-critical, FKM is often the only answer.

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It’s not just a rubber.
It’s a guarantee.

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And just when you think rubber couldn’t get more advanced, we turn to silicone, a material valued not for toughness, but for purity, flexibility and clarity.