Greene, Tweed’s Chemraz® 514, a perfluoroelastomer (FFKM), is a white specialty compound, perfect for applications where contamination from carbon black must be prevented. Chemraz® 514 offers a Shore A hardness value of 70. Because of its wide temperature range, -22ºF to 428ºF (-30ºC to 220ºC) Chemraz® 514 is ideally suited for applications ranging from mechanical seals to valves.

Available for use as O-rings, gaskets and many other custom shapes.

Features & Benefits

  • No carbon black residue
  • Low temperature capabilities (-22ºF/-30ºC)


  • Mechanical seals
  • Valves
  • Pump housings
  • Reactors
  • Mixers
  • Sprayers/dispensers
  • Couplings