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Kalrez Industry Applications

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Superior performance in the harshest processing environments

For over 25 years, Kalrez® perfluoroelastomer parts have been providing the ultimate in sealing performance in the harshest processing environments. Some of the industries and applications in which Kalrez® parts provide superior performance include:

Chemical Processing – In pumps, valves, reactors, flange joints and other equipment, Kalrez® parts—whether O-rings, custom shapes or valve stem packing systems—are proving their value year in and year out as the best choice for long-term, reliable service.

Semiconductor – The success of Kalrez® has been field-proven in the manufacture of semiconductors, where processing steps can involve extremes of both thermal and chemical exposure.

Life Sciences – Life Sciences applications such as pharmaceutical, medical packaging and the food and beverage industries require the highest standards of safety, temperature and chemical resistance in production. To achieve this they need high performance seals that can ensure efficiency and cleanliness.

Aerospace – High-performance Kalrez® parts provide reliable and long-lasting sealing performance for the military, commercial and general aviation industry. They are used as oil seals in gas turbine engines and air delivery systems.

Oil and Gas – Kalrez® parts stand up to severe down-hole conditions—from high pressures and temperatures, to aggressive sour gas and corrosive fluids.

Photovoltaic – Kalrez® seals for photovoltaic cell manufacturing processes retain their elastomeric properties at temperatures as high as 325°C, & resist over 1800 chemicals including alkalis, acids, solvents, O2 and fluorine-based plasma.





Standard Kalrez® O-Ring Compounds

Daemar DMR O-Rings Kalrez

Kalrez® Compounds – 4079

4079 perfluoroelastomer parts are a black, low compression set product for use in many dry and wet semiconductor process environments. It has excellent chemical resistance, good mechanical properties and outstanding thermal stability.


Kalrez® Compounds – 6375

6375 is designed to give outstanding performance in the widest possible range of chemicals and temperatures. This product is an excellent choice for use in acids, bases, amines, steam, ethylene oxide, and many other aggressive chemicals.


Kalrez® Compounds – 7075

7075 is designed for general-purpose use as O-rings or custom sealing components in the chemical and hydrocarbon processing industries. It is a carbon black-filled compound with mechanical properties designed for improved sealing performance in temperature cycling applications. 7075 has improved thermal resistance that extends maximum service temperature to 327 °C (620 F).


Kalrez® Compounds – 0090

0090 perfluoroelastomer parts deliver durable, reliable sealing solutions for applications requiring excellent rapid gas decompression (RGD) properties as well as high hardness and high modulus properties. Some application areas include downhole equipment such as drilling and completion tools as well as industrial equipment including pumps and valves.

Specialty Kalrez® O-Ring Compounds


Kalrez® Spectrum™ – 7375

Kalrez® Spectrum™ 7375 perfluoroelastomer parts are an innovative FFKM product based on a patented crosslinking system for chemical process industry applications where broad chemical and water/steam resistance are needed at elevated temperatures. Kalrez® Spectrum™ 7375 parts exhibit excellent compression set resistance, outstanding physical property retention, and good mechanical strength properties.


Kalrez® Compounds -6380

6380 is a non-black product specifically developed for chemical processes involving hot, aggressive amines. It has also been successfully used in applications involving highly oxidizing chemicals. In addition, it has excellent overall chemical resistance. This cream colored product is easily identifiable when selecting an O-ring material for harsh chemical plant services.


Kalrez® Compounds -7090

7090 is a product for uses requiring higher hardness/higher modulus than more typical applications. Kalrez® 7090 perfluoroelastomer parts are well suited for both static and dynamic applications as well as specific sealing applications requiring extrusion resistance at high temperatures.


Kalrez® Compounds -0040

0040 -is a black product specifically designed for low temperature environments where significant chemical resistance is required. Kalrez® 0040 parts maintain elasticity and seal force at temperatures unattainable by other perfluoroelastomers.




Kalrez® Compound – W240

Kalrez® W240 perfluoroelastomer parts are a black product for photovoltaic wet manufacturing processes requiring a wide range of chemical resistance. W240 provides an excellent combination of properties (resistance to acids/bases) and is the product of choice for wet processes as an upgrade from standard elastomers, i.e., FKM, NBR, EPDM, etc.




Kalrez® is a registered trademark of E.I. du Pont de Nemours and Company or its affiliates












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