KALREZ®

 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.

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.

Ultrapure Compounds

Kalrez® Ultrpure Compounds are designed specifically for Semiconductor Manufacturing.

Ultrapure Wet 8201---Developed specifically for wet chemical applications. It features lower elemental extractables than competing perfluoroelastomers as well as very low organic contamination. Ultrapure Wet offers excellent resistance to Piranha, ultrapure deionized water (UPDI), and other aggressive chemicals used during lithography, etching, and wafer cleaning. It has good compression set characteristics and is thermally stable up to 220ºC (428ºF).

Ultrapure Dry 8101---Offers excellent compression set performance for dry chemical processes and plasma environments. zthis compound contains a nonreactive reinforcing filler for superior protection against seal degradation and particle generation. It's exceptional outgassing characteristics make it well suited for hogh-temperature and vacuum applications. Ultrapure Dry exhibits excellent resistance tp corrosive gases and thermal stability up to 300ºC (572ºF).

Ultrapure 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).

Ultrapure 2037---A nonblack-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 perfluorinated 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 finishings 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 excellend 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.

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