Kalrez Parts Heat Resistance
Kalrez® perfluoroelastomer parts last longer and seal more effectively than other elastomers due to their exceptional heat resistance. Longer-lasting seals can be a direct route to extended mean time between replacement and lower cost of ownership.
The outstanding thermal stability and excellent chemical resistance of perfluoroelastomer parts are due to the strength of its carbon-fluorine bond in the perfluorinated chain. Even after long-term exposure to temperatures up to 327°C, Kalrez® parts retain elasticity and recovery properties better than other high temperature elastomers. They resist hardening and embrittlement, the principal heat-related cause of seal degradation and failure. And in high-vacuum semiconductor applications, Kalrez® parts exhibit negligible outgassing over a wide temperature range.
Low Compression Set
As shown above in the graph, Kalrez® parts exhibit low compression set, maintaining their elastic recovery to maintain tight seals over the long haul. Because Kalrez® parts recover better under compression than other perfluoroelastomers, they maintain their shape better under prolonged stress.
Standard Kalrez® O-Ring Compounds
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.
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.
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).
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
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.
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.
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® is a registered trademark of E.I. du Pont de Nemours and Company or its affiliates