Isolast® series of FFKM compounds for extreme temperatures

High-performance Isolast® materials solve the problem of extreme temperatures and aggressive media

High-performance Isolast® materials solve the problem of extreme temperatures and aggressive media


The Isolast® series of FFKM (perfluoroelastomer) compounds from Trelleborg Sealing Solutions represents a significant technological breakthrough in the field of engineering elastomers. These materials have been specifically formulated and synthesized to provide exceptionally high chemical resistance and tolerance to severe thermal fluctuations, ensuring an effective and durable seal in challenging operating conditions. The purpose of this technology is to amplify production and optimize efficiency by reducing unscheduled downtime and extending the life cycle of critical components.

Trelleborg Sealing Solutions’ ability to manufacture highly complex custom components derives from its leveraging of a variety of advanced manufacturing processes and state-of-the-art polymerization techniques. This, combined with high-quality Isolast® compounds, makes it possible to create sealing solutions tailored to specific applications in industries with stringent requirements, such as semiconductor, food and beverage, pharmaceutical and chemical processing.

Trelleborg Sealing Solutions, stresses the importance of an integrated approach to R&D and materials validation. Extensive testing and quality control procedures are performed in-house to ensure that Isolast® compounds meet the highest standards of purity and cleanliness. Special emphasis is placed on minimizing outgassing, minimizing the presence of trace metals and ensuring superior thermal stability. In addition, the diversity of Trelleborg Sealing Solutions’ manufacturing options enables the production of high-specification customized seals and components,

Fully bonded components

Fully bonded components are available in a wide variety of metals, such as stainless steel, mild steel and aluminum, combined with different Isolast® compounds, depending on the application conditions. Trelleborg’s joining process maximizes joint integrity to produce cost-effective, easy-to-assemble products that combine functions in a single part. Isolast® materials can also be tightly bonded to a wide range of different plastic materials to increase cleanliness, provide optimum sealing performance and consolidate several parts into one. This extends maintenance intervals, consolidates parts and reduces secondary operations such as subassemblies.

Benefits of Isolast®


  • It resists the most aggressive chemicals and extreme temperatures, allowing its use in the most demanding conditions.
  • It has a long service life, which leads to less maintenance and reduced downtime, as well as a lower total cost of ownership.
  • Its low compression set tendency ensures higher sealing strength and decreases the chance of leakage for a longer period of time.
  • Its high purity, guaranteed by clean room production, makes it ideal for semiconductor applications requiring the highest standards of cleanliness.
  • It offers resistance to Rapid Gas Decompression, which makes it suitable for the difficult conditions encountered in oilfields.
  • It is available with a wide range of regional and industry-specific approvals, including FDA, USP and NORSOK M-710, ensuring compliance with the highest international standards.



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