Chemically Resistant Seals Rated To 42°C With DuPont Kalrez Spectrum 0040 Parts

Newark, DE - The latest innovation in DuPont Kalrez Spectrum parts help meet the need for effective sealing performance at extremely low temperatures while maintaining the wide range of chemical resistance typical of Kalrez perfluoroelastomer parts.

Kalrez Spectrum 0040 perfluoroelastomer sealing parts are rated for service at temperatures down to 42°C, a major benefit in equipment used in high latitude, high altitude or other freezing cold environments. Typical applications include chemical and hydrocarbon processing equipment involving cold startups, hose couplings for chemical transport equipment and manhole seals for rail cars.

"The 42°C rating of Kalrez Spectrum 0040 parts marks a major step forward," said Rene Garza, global marketing manager, energy and material handling – DuPont Kalrez and Vespel. "The 42°C rating also makes Kalrez Spectrum 0040 an excellent choice over less chemically resistant elastomers, such as silicone or fluoroelastomers," according to Garza.

"This development confirms yet again DuPont leadership in perfluoroelastomer technology," Garza said. "The combination of our expertise and control of the entire development process from polymer to finished part pays big benefits for our customers."

DuPont establishes low-temperature seal ratings of various materials by mounting O-rings in a test fixture on the inside wall of a pressure-tight container. The container is then filled with nitrogen to reach an nternal pressure of 0.4 MPa (60 psi). Temperature is then dropped in 0.5°C increments until leakage to the outside of the container is detected.

SOURCE: DuPont