Chemical Processing Seals

Chemical Processing Seals For Reliable Performance

Kalrez® seals provide exceptional service in high-heat, aggressive-chemical processing environments.

Chemical Processing Seals

DuPont™ Kalrez® chemical processing seals are a high-performance, cost-effective choice for demanding manufacturing uses. They provide broad chemical resistance and stability up to 327°C, with a range of grades to match specific applications.

A New Standard of Resistance

Kalrez® 4079 set the standard for high-temperature, chemically resistant seals with its introduction in the 1980s. It rapidly found its way into aerospace, chemical processing and oil and gas applications.

Since its introduction, many additional products, including Kalrez® Spectrum™ 6375, have been added to the Kalrez® portfolio, to help meet unique application requirements.

Broad-Spectrum Resistance

Kalrez® Spectrum™ 6375 seals have been an excellent choice for use with acids, bases, amines, steam, ethylene oxide, and many other aggressive chemicals. Mixed streams, once a problem for many chemical processors, are now applying Kalrez® Spectrum™ 6375 parts. For higher temperature environments, Kalrez® Spectrum™ 7075 seals can withstand temperatures up to 327°C.

Kalrez® parts are available in various compounds to meet individual application requirements.  Contact DuPont if you require assistance in selecting the appropriate product.

More Efficient Production

Kalrez® chemical processing seals can reduce downtime and extend the mean time between replacements. Some examples of their uses include couplings, pumps, valves, reactors and flange joints. Kalrez® seals have proven performance in mechanical seal applications around the world. Whether you choose O-rings or a customized shape, Kalrez® is a high-value, cost-saving part that you can put to work in your applications.

Industry-Focused Solutions

DuPont application engineers collaborate with end-users to help users specify products that help meet their application requirements, whether it’s aggressive amines, solvents, high temperatures, or seals designed for specialty applications. Kalrez® seals are used in a range of industries, including:

  • Chemical production and transport
  • Petroleum refining
  • Agricultural chemicals manufacturing
  • Painting and coating operations
  • Analytical and process control instrumentation

Safety and Compliance Support

Kalrez® seals can help reduce leaks and fugitive emissions, for improved compliance with environmental regulations. Because Kalrez® seals used in chemical processing maintain their sealing integrity within a broad range, they can help maintain operations and lower overall production costs.