Viton or FKM O-Rings?

November 30, 2023 – by Eastern Seals

Viton™, a brand of FKM (fluoroelastomer), is a synthetic rubber known for its high performance in extreme conditions. FKM O-Rings are widely used in the aerospace, automotive, and oil industries due to their exceptional properties.

Outstanding Heat Resistance: FKM O-Rings are renowned for their ability to withstand high temperatures. They can operate efficiently in environments ranging typically from -20°C to +200°C, with some special grades handling even higher temperatures. This makes them ideal for applications in engines, transmission systems, and high-temperature industrial processes.

Excellent Chemical Resistance: FKM O-Rings offer superior resistance to oils, fuels, lubricants, and most mineral acids. They also resist degradation from a wide range of other chemicals, including petroleum oils, hydraulic fluids, and gases. This resistance ensures longevity and reliability in harsh chemical environments.

Resistance to Aging and Weathering: FKM is highly resistant to aging, weathering, ozone, sunlight, and oxygen. This durability makes FKM O-Rings an excellent choice for outdoor applications or those exposed to harsh environmental conditions.

Customization and Variety: FKM O-Rings are available in various grades, each tailored for specific resistance properties and temperature ranges. This variety allows for a high degree of customization to meet specific industrial requirements.

Limitations: While FKM O-Rings have many advantages, they are not suitable for use with ketones, low molecular weight esters, and nitro-containing compounds. Their performance in very low temperatures is also limited.

In conclusion, FKM O-Rings, particularly those under the Viton™ brand, are an excellent choice for demanding applications requiring high temperature and chemical resistance.