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Kalrez® FFKM O-Rings for Vacuum and Low Outgassing

Kalrez® FFKM O-rings for vacuum and low outgassing applications are engineered for environments where permeation, contamination, and volatile emissions must be minimized. These perfluoroelastomer O-rings are widely used in vacuum chambers, semiconductor equipment, aerospace systems, and high purity processing environments where stable sealing performance is required under low pressure and elevated temperature conditions. Kalrez® FFKM materials provide excellent chemical resistance, low extractables, and reduced outgassing characteristics while maintaining sealing integrity in demanding vacuum systems involving O-rings, gaskets, and custom parts.


Canyon Components supplies Kalrez® FFKM O-rings alongside Canrez® perfluoroelastomer alternatives, offering a competitively priced solution with fast lead times and extremely high quality. Our team supports material selection based on vacuum level, permeation concerns, process chemistry, and thermal requirements to ensure reliable sealing performance in vacuum and high purity applications.


Common names include: Vacuum FFKM O-rings, low outgassing O-rings, perfluoroelastomer vacuum seals

Trade names include: Kalrez®, Canrez®, Chemraz®, Parofluor®

FFKM O-rings from Canyon Components providing excellent chemical, heat, and compression resistance in critical sealing applications.

Other FFKM Offerings - Canrez®

The Canrez® range of perfluoroelastomer (FFKM) materials, O-rings, gaskets, & custom molded parts are at the leading edge of polymer technology. Proven in the field year after year, Canrez® materials, O-rings, gaskets, & custom molded parts have been developed to offer superior sealing solutions with enhanced high temperature performance and fantastic chemical resistance at an extremely competitive price! Canrez materials are comparable, and sometimes superior to Kalrez®.

Canrez FFKM O-rings from Canyon Components, a Kalrez equivalent, offer exceptional chemical resistance and high-temperature sealing for semiconductor, pharmaceutical, and chemical processing industries.

Learn more about CanRez™

Learn more about CanRez™

Kalrez® FFKM Materials Available

This table shows many of our standard materials and links out to our O-ring store. Get in touch with us if you need a custom gasket, custom molded part, or non-standard geometry!

Canyon Components stocks Kalrez O-rings in AS568, JIS, and Metric sizes with custom molded FFKM part options.

Features of Kalrez® FFKM O-Rings for Vacuum and Low Outgassing

  • Kalrez® FFKM O-rings provide low outgassing and low extractables for vacuum and high purity systems


  • FFKM materials maintain sealing integrity under vacuum conditions and elevated temperatures


  • Kalrez® FFKM O-rings offer excellent resistance to aggressive chemicals, solvents, and process gases


  • These O-rings exhibit low permeability, helping reduce gas migration and contamination risks in vacuum environments


  • Kalrez® FFKM materials maintain low compression set for reliable long-term sealing performance


Limitations of Kalrez® FFKM O-Rings for Vacuum and Low Outgassing

  • Kalrez® FFKM O-rings have a higher cost compared to standard vacuum elastomers


  • Lead times may vary depending on compound selection and size requirements


  • Low temperature flexibility is limited compared to silicone or fluorosilicone materials


  • Vacuum system performance depends heavily on proper gland design, surface finish, and installation practices


  • Over-specifying premium FFKM compounds in moderate vacuum applications can increase cost without added benefit

Please consult a Canyon Components Engineer about your specific application and we will use our decades of experience to formulate a solution that fits your need.

Industrial Usage of Kalrez® FFKM O-Rings for Vacuum and Low Outgassing

Kalrez® FFKM O-rings are used in vacuum and low outgassing applications where contamination control, low permeability, and reliable sealing are critical. These O-rings are widely specified in systems where volatile emissions, particle generation, or gas permeation can impact performance or product quality. Selecting the right Kalrez® FFKM or Canrez® compound depends on vacuum level, process chemistry, temperature range, and cleanliness requirements.


Canyon Components provides engineering support to assist with material selection, vacuum sealing design, and contamination reduction strategies. Our team can help evaluate application requirements and provide supporting documentation including Datasheets, TDS, Test Reports, MTR documentation, and MSDS or SDS resources to ensure reliable performance in vacuum environments.

Semiconductor Manufacturing

Kalrez® FFKM O-rings are used in vacuum chambers and wafer processing equipment requiring low contamination and low outgassing

Aerospace and Space Systems

FFKM O-rings are used in vacuum environments where low permeability and stable sealing performance are critical

High Purity Processing Equipment

Kalrez® FFKM seals are used in systems requiring minimal extractables and contamination control

Analytical and Laboratory Equipment

FFKM O-rings are used in vacuum instrumentation and precision systems requiring stable sealing under low pressure

Industrial Vacuum Systems

Kalrez® FFKM O-rings provide reliable sealing performance in demanding vacuum applications involving aggressive chemicals and elevated temperatures

Please consult a Canyon Components Engineer about your specific application and we will use our decades of experience to formulate a solution that fits your need.

All Other FFKM Types Available

Canrez® FFKM O-Rings & Custom Parts
Canrez® FFKM O-Rings & Custom Parts

Canyon Components supplies Canrez® FFKM O-rings, equivalent to Kalrez®, Chemraz®, and Parker® O-rings, in AS568, JIS, and Metric sizes. These perfluoroelastomer O-rings provide exceptional chemical resistance, high-temperature stability, and long-term sealing performance for semiconductor, pharmaceutical, and chemical processing applications. Custom molded Canrez® parts available.

Kalrez® vs Canrez®: Comparing FFKM Sealing Solutions"
Kalrez® vs Canrez®: Comparing FFKM Sealing Solutions"

Compare Kalrez® vs Canrez® FFKM for O-rings, gaskets, and custom parts. Learn the differences in performance, availability, and cost to choose the best perfluoroelastomer for your application.

Kalrez FFKM O-Rings, Gaskets & Custom Parts
Kalrez FFKM O-Rings, Gaskets & Custom Parts

Canyon Components supplies genuine Kalrez® FFKM O-rings, gaskets, and custom molded parts with exceptional chemical resistance and high-temperature performance. Available in AS568, Metric, and custom sizes, with Canrez®, Chemraz®, and Parker® O-ring equivalents for semiconductor, pharmaceutical, aerospace, and chemical processing applications.

Parker Hannifin Parofluor FFKM O-Rings, Gaskets & Custom Parts
Parker Hannifin Parofluor FFKM O-Rings, Gaskets & Custom Parts

Canyon Components supplies genuine Parker Hannifin Parofluor FFKM materials for extreme chemical resistance and high temperature sealing. Compare Parofluor with Canrez® FFKM for O-rings, gaskets, and custom parts in demanding applications.

Chemraz FFKM O-Rings, Gaskets & Custom Parts
Chemraz FFKM O-Rings, Gaskets & Custom Parts

Canyon Components supplies Chemraz® FFKM O-rings engineered for the most demanding sealing applications. Known for extreme chemical resistance and high-temperature stability, Chemraz® O-rings provide reliable sealing in semiconductor, pharmaceutical, aerospace, and chemical processing environments. Alternatives include Kalrez®, Canrez®, and Parker® FFKM O-rings in AS568, Metric, and custom sizes.

Simriz® FFKM from Freudenberg: O-Rings, Gaskets, and Custom Parts
Simriz® FFKM from Freudenberg: O-Rings, Gaskets, and Custom Parts

Canyon Components is a distributor of Simriz® FFKM O-rings designed for extreme chemical resistance and high temperature applications. Compare Simriz® with Canrez® FFKM for O-rings, gaskets, and custom parts in demanding sealing environments.

Back to Elastomers Hub

Unlock Superior Performance with Canrez FFKM O-Rings - Explore High-Quality Sealing Solutions for Demanding Industrial Applications. Ensure High Chemical Resistance, Extreme Temperatures & Leak-Free Seals. Your Trusted Source for Canrez FFKM O-Rings.

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Viton Extreme ETP seals and O-rings from Canyon Components, offering superior chemical resistance and durability in extreme industrial environments.

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