Kalrez® O-Rings and Seals

We offer Kalrez® O-Rings and Seals, the o-rings and seals to trust for tough sealing applications

For demanding sealing applications when you require the very best, Kalrez® o-rings and seals are the elastomer seals of choice. Supplied in standard o-rings or custom shapes, Kalrez® resists over 1,800 different chemicals while offering the high temperature stability of PTFE (316°C). Advanced properties help maintain the integrity of the o-rings and seals, reduce maintenance and operating costs and improve safety. Kalrez® o-rings and seals provide reliable, long-term service with a wide range of aggressive industrial and electronic grade chemicals. They are used in highly aggressive chemical processing, semiconductor wafer processing, pharmaceutical, oil and gas recovery, aerospace and petroleum applications. Production facilities for Kalrez® are ISO and AS 9000 registered.

Kalrez Spectrum 7075
Kalrez® Spectrum™ 7075 Resists Aggressive Fluids at High Temperatures, Saves Costs in Hilma-Römheld Clamping Systems

Kalrez® Spectrum™ 7075 O-rings fitted to Hilma-Römheld heavy duty clamping systems resist pressures up to 400 bar, temperatures as high as 250°C, and clamp forces up to1250 kN without leakage of hydraulic fluid, thus minimizing the risk of premature seal failure and significantly reducing costly down-time.

Kalrez® o-rings and seals are available in a number of different compounds that are formulated to optimize properties and give the best possible performance in various chemicals and temperatures. Modification of the finished properties is achieved by use of fillers and other additives to enhance their performance.

When using Kalrez® o-rings and seals it is important to consider all factors such as process chemicals, process temperatures and seal design. Before considering a compound, contact us to take advantage of our technical expertise to help you choose the best compound for your application.

Critical Properties

Comparison Chart

Kalrez® o-ring, seal and part availability

Kalrez® Industries

Chemical Processing Industry

Semiconductor Industry

Ultrapure™ Post-Cleaning and Packaging

Kalrez® TriLobe™ Seals

Pharmaceuticals and Food Industries

Sanitary Seals

FDA Statement of Compliance

Aircraft and Aerospace Industries

Oil and Gas Industries

Kalrez® is a registered trademark of DuPont Performance Elastomers