Greene, Tweed’s Chemraz® 505 a perfluoroelastomer, provides
a broad range of chemical resistance. Chemraz® 505 is available for use as O-rings, gaskets and many other custom shapes. Because of its versatility, Chemraz® 505 is often used as a standard compound and can be found in a variety of applications including acids, caustics, aldehydes, esters, ethers, aromatics, hot water, steam, amines, methanol, ketones, TBA and MTBE. With a temperature range of -22°F to 446°F (-30°C to 230°C), Chemraz® 505 is ideal for processes taking place in subzero temperatures as well as for use in multisubstance plants or in mixed media due to its broad chemical resistance.

Features & Benefits

  • Broad chemical compatibility for use with a wide range of harsh solutions
  • Lower compression set provides better ability to handle temperature and pressure variations, shaft misalignment and O-ring shrinkage
  • Low temperature capabilities (-22°F/-30°C)


  • Mechanical seals
  • Valves
  • Pump housings
  • Reactors
  • Compressors
  • Sampling/metering equipment
  • Mixers
  • Controls/instrumentation
  • Sprayers/dispensers
  • Coupling

Chemraz 505 can be used in applications exposed to the following media: