When it comes to high-performance seals and gaskets, Viton® stands at the forefront of elastomer technology. As a premium grade of FKM material, Viton offers unparalleled resistance to heat, chemicals, and compression set—making it the go-to choice for engineers and maintenance teams across industries.
What Is FKM Material?
FKM (fluoroelastomer) is a family of synthetic rubbers known for exceptional thermal stability and chemical resistance. Developed in the 1950s, FKM compounds incorporate fluorine into their polymer backbone, granting them:
- High-temperature tolerance (up to 200 °C continuous)
- Resistance to petroleum-based oils and fuels
- Outstanding durability under aggressive chemical exposure
These attributes make FKM seals a vital component in applications where standard elastomers would fail.
Why Choose Viton® Seals?
Viton® is DuPont™’s trade name for their flagship FKM formulations, engineered to enhance performance even further:
Extreme Temperature Resistance
Maintains elasticity from –20 °C to +200 °C (and short-term peaks beyond).
Chemical Compatibility
Unaffected by acids, alkalis, refrigerants, and many solvents.
Low Compression Set
Retains sealing force over long service intervals, reducing maintenance downtime.
Longevity and Reliability
Exceptional resistance to ozone, weathering, and aging.
Together, these properties ensure Viton seals deliver minimal leakage and maximum uptime in challenging environments.
Types of Viton® Sealing Solutions
Viton® O-Rings
Versatile and easy to install, Viton O-rings form the backbone of many static and dynamic sealing assemblies. Their smooth surface finish and precise molding guarantee tight seals in valves, pumps, and hydraulic systems.
Viton® Gaskets
Custom-cut or molded, Viton gaskets provide flange and face-seal solutions for piping, exhausts, and heat exchangers. They withstand thermal cycling and aggressive fluids without cracking or swelling.
Specialty FKM Seals
Beyond standard shapes, FKM material is available in custom profiles—U-cups, quad-rings, and diaphragms—to meet specific performance demands in the aerospace, automotive, and chemical processing sectors.
Applications Across Industries
- Oil & Gas: Sealing high-pressure valves and flanges exposed to crude derivatives.
- Automotive: Engine gaskets, fuel injector seals, and turbocharger components.
- Chemical Processing: Pump seals handling corrosive acids and solvents.
- Pharmaceutical & Food: Compatible grades maintain purity and meet FDA standards.
- Aerospace: O-rings for fuel systems and environmental control assemblies.
Design Considerations
When specifying FKM seals, consider:
- Hardness (Shore A): Typically between 70–90 for optimal wear and load distribution.
- Compound Grade: Special formulations exist for low-temperature flexibility or enhanced chemical compatibility.
- Surface Finish: Polished mating surfaces improve seal life, especially in dynamic applications.
Consult materials data sheets and perform compatibility tests with your specific media and operating conditions.
Installation & Maintenance Tips
- Cleanliness: Remove debris and ensure all sealing surfaces are free of scratches or grooves.
- Lubrication: A thin film of compatible lubricant eases installation and prevents extrusion.
- Proper Compression: Follow manufacturer guidelines on gland dimensions to avoid over-compression.
Inspection Intervals: Even Viton®’s rugged performance benefits from scheduled checks for wear or damage.
Conclusion
Whether you need Viton seals for high-temperature pumps or Viton gaskets in critical flange joints, FKM material delivers the reliability your operation demands. By choosing Viton® O-rings, gaskets, and custom seals, you invest in longer service life, reduced downtime, and superior chemical resistance.
Ready to specify FKM seals for your next project? Contact our technical team today to find the perfect Viton® solution for your application.
