Perfluoroelastomer Parts
A Product of DuPont Dow Elastomers

California Seal & Fastener, Inc. is an authorized Kalrez®  Distributor for the Semiconductor Industry. We carry an extensive inventory in several locations across the country to meet your immediate requirements.

Kalrez perfluoroelastomer parts are available in a number of different compounds that are formulated to optimize properties and give the best possible performance in various applications. Modification of the finished properties is achieved by use of fillers and other additives..

Kalrez  9100

Kalrez® Sahara™ 

Kalrez® Sahara™ 8575 is the newest addition to the Sahara family of ultrapure products. This compound, specially formulated for improved performance in etch, CVD and stripping processes, offers lower cost of ownership with reduced contamination and longer seal life. This white perfluoroelastomer compound utilizes a new proprietary polymer and crosslinking system. It builds on the excellent plasma resistance of Kalrez® Sahara™ 8375 with reduced weight loss, particle generation and outgassing, as well as improved elastic recovery properties. Sahara Plasma 8575 offers excellent resistance to oxygen and fluorine plasma as well as chlorinated celeaning gasses (e.g., CIF3), exhibits excellent vacuum and long-term sealing performance, has good mechanical properties and is well-suited for both static and dynamic dry process applications (e.g., slit valve doors, chamber lids, gas inlets, etc.). Its maximum continuous service temperature rating of 280°C is well above the typical requirements for seals used in these processes. Ulrapure post-cleaning and packaging is standard for all parts made of Plasma 8575.

Typical Properties

Standard Compounds

Compound 4079--- A low compression set compound for general purpose use in O-rings, diaphragms, seals and other parts used in the process and aircraft industries. It is a carbon black filled compound with excellent chemical resistance, good mechanical properties and outstanding hot air aging properties. It exhibits low swell in organic and inorganic acids and aldehydes and has good response to temperature cycling effects. A maximum operating temperature of 316ºC (600ºF) is recommended, with short excursions to higher temperatures possible. This compound is not recommended for use in hot water/steam applications or in contact with certain hot aliphatic amines, ethylene oxide and propylene oxide.

Compound 1050LF---A general purpose compound for O-rings, seals and other parts used in chemical process industries. It has good hot water/steam, excellent amine resistance and compression set properties. Maximum recommended service temperature of 288ºC (550ºF). Not recommended for use in organic or inorganic acids at high temperatures.

Ultra pure Compounds

Kalrez® Ultra pure Compounds are designed specifically for Semiconductor Manufacturing.

Ultra pure 4079---A low compression set compound for general use in many semiconductor process environments. This carbon black-filled compound offers excellent chemical resistance, good mechanical properties, and thermal stability up to 316ºC (600ºF).

Ultra pure 2037---A non-black-filled compound for use in many plasma environments. This compound offers excellent chemical resistance, good mechanical properties, and thermal stability up to 220ºC (428ºF).

Specialty Compounds

Note: Before ordering Kalrez parts in specialty compounds, please consult with DuPont or Distributor Technical Staff to determine properties needed for the application. Specialty compound products are generally not held in inventory.

Compound 1058---A carbon black filled compound that has been plasticized with a perfluoronated oil. It is the softest, lowest modulus compound available. Generally it is similar in chemical resistance to Compound 1050LF it has an upper service temperature of 260ºC (500ºF). Typically used in applications that require low sealing force or high extensibility including liquid chromatography septa, seals/seats for relief valves and tubing. Its shrinkage is greater than other Kalrez compounds; therefore, finished parts may differ from standard specifications.

Compound 1018---A carbon black filled compound of similar hardness to Compound 1050, but with high temperature capability up to 288ºC (550ºF). Has better hot water/steam resistance properties than all other compounds, except Compound 3018. Not recommended for use in organic or inorganic acids at high temperatures or for rapid temperature cycling applications.

Compound 3018---A carbon black filled compound similar to Compound 1018 except for higher hardness/modulus. This compound offers the best hot water/steam resistance and the best high pressure extrusion resistance. Generally used in oil field and process industry applications where these properties coupled with good amine and general chemical resistance are required.

Compound 2035---A carbon black filled compound that is well suited for selected applications in the finishing's equipment, pharmaceutical, semiconductor and chemical transportation markets. Compound 2035 has excellent chemical resistance exhibiting low swell in organic acids, inorganic acids, esters, ketones and aldehydes. It also offers good mechanical properties. A maximum service temperature of 218ºC (425ºF) is recommended.

Compound 2037---A non-black filled compound that is well suited for selected applications in the pharmaceutical, semiconductor and other markets that demand high quality purity elastomers. Compound 2037 has excellent  chemical resistance, exhibiting low swell in organic acids, inorganic acids, esters, ketones and aldehydes. It also offers good mechanical properties. A maximum service temperature of 218ºC (425ºF) is recommended.

Miscellaneous Properties

Many miscellaneous properties are of interest for specific applications. Some of these are unaffected by compound choice, while others vary with hardness or extensibility. As an example, coefficient of friction typically increases as hardness decreases. In general, miscellaneous physical properties are similar to those of Viton ®  fluoroelastomer.

Product Safety

Product safety information is available in Material Safety Data Sheets (MSDS) documentation.

Other specialty or custom compounds may be available or developed for applications that require different properties than the above compounds offer.

For More Information on Perfluoroelastomers 
Please Call Us At 1-800-988-2291 or  
Email: info@calseal.com

Kalrez ®  is a Registered Trademark of DuPont Dow Elatomers L.L.C