DuPont™ Kalrez 0040 is the only perfluoroelastomer rated for temperatures as low as -42 degrees C. This is ideal for equipment and instrumentation which will be used in
- sub-zero environments
- high altitude
- cold storage applications
- aggressive chemical environments
Proven Success in Refining
At an oil refinery in midwestern Canada, DuPont™ Kalrez® Spectrum™ 0040 mechanical seals for various hydrocarbons operated continuously for six months before a scheduled shutdown. They replaced O-rings made of fluoropolymer- encapsulated silicone which had an MTBR (meantime between repairs) of about one week. Temperatures ranged from –48 °C to +15 °C and back to –48 °C in a 24 hour period.
Unlike some low-temperature seals, DuPont™ Kalrez® Spectrum™ 0040 parts help withstand attack by most aggressive chemicals including Nitric, Sulphuric and Ammonium Hydroxide and Amines. They provide a more reliable alternative to silicone and other low- temperature elastomer parts offering chemical resistance.
In applications where there are mixed streams, unknowns in the process or process excursions, DuPont™ Kalrez® Spectrum™ 6375, offers the broadest chemical resistance.
Improved sealing performance in extreme low temperature environments is a major benefit in equipment used in high latitude, high altitude or other freezing cold environments.
Where Low-Temperature Performance Pays
Chemical and hydrocarbon processing equipment involving cold startup, hose couplings for chemical transport equipment, and manhole seals for rail cars, aircraft and other aerospace vehicles are among the many potential applications for DuPont™ Kalrez® Spectrum™ 0040 parts.