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DuPont™ Kalrez® perfluoroelastomer parts last longer and seal more effectively than other elastomers due to their exceptional chemical resistance and thermal stability. Longer-lasting seals can be a direct route to extended mean time between replacement and lower cost of ownership.
Even after long-term exposure to temperatures up to 327°C, Kalrez® retains its elasticity and recovery properties better than other high temperature elastomers.
It resists hardening and embrittlement, the principal heat-related cause of seal degradation and failure. And in high-vacuum applications, Kalrez® parts exhibit negligible outgassing over a wide range of temperatures. This helps reduce pump-down times and is a key requirement in semiconductor manufacture and other applications where a contamination-free environment is critical.
As shown below, 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.
Long-Term O-Ring Compression Set at 204ºC (400ºF)
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