Kalrez FFKM Perfluoroelastomer O-Rings
Commonly referred to as Isolast (Trelleborg Sealing Solutions), Kalrez (DuPont Dow), Chemraz (Greene, Tweed & Co.), and Simriz (Simrit) this expensive elastomer type is usually produced as a terpolymer of tetrafluoroethylene, a cure site monomer used for cross-linking, and a perfluorovinyl ether. Best O-Ring compound for chemical resistance.
Operating Temperature: up to 428°F (220°C)
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