difference between Kalrez perfluorinated rubber and Viton fluororubber

What is the difference between Kalrez perfluorinated rubber and Viton fluororubber?

Kalrez is a brand of DuPont fluoroether modified perfluoroether rubber. The long-term temperature resistance can be 250 degrees Celsius – 320 degrees Celsius.  Viton fluororubber is the brand of DuPont’s general binary and ternary fluororubber. Long-term use temperature is 200 degrees Celsius, 204.4 degrees Celsius = 400 degrees Fahrenheit.

IKSONIC produce the high quality parts made from Kalrez perfluorinated rubber and Viton fluororubber,

MOQ: 1 piece.

FPM FKM FFKM Viton flat gasket

Standard or Nonstandard viton material NQK SF oil seal