Krytox PFPE/PTFE vacuum grease

Krytox 207, GPL206 and GPL 205 are a long-lasting, white buttery greases which are non-reactive, non-flammable and safe in chemical and oxygen service. It only contains carbon, oxygen and fluorine, but no hydrogen or silicone. It will not burn or support combustion. It is an ideal grease for vacuum parts which are exposed to air such as rods in vacuum loading locks, vacuum door seals, moving aperture holders and valves. Krytox does not degrade on contact with air, does not contain any silicone and is basically chemically

inert. Krytox GPL207/206/205 greases consist of Krytox perfluoropolyether (PFPE) fluorinated synthetic oil and Krytox 2000 polytetrafluoroethylene (PTFE). It also exhibits excellent anti-seize properties and it can be used up to a service temperature of 288°C. Originally a Dupont product, now produced by Chemours. Krytox GPL207/206/205 are alternatives to Braycote 803 and the OC Five / OC Seven greases.

Due to initial outgassing, it is recommended to pre-condition the grease under vacuum and at operating temperature until the required vacuum level has been reached.

Typical applications include:

  • Seal and lubricate in oxygen applications
  • Seal and lubricate vacuum components
  • Seal and lubricate load-lock rods
  • Seal and lubricate vacuum feedthroughs
  • Lubricate O-rings on vacuum systems
  • Lubricate seals in aggressive chemical environments

 Product safety data sheets:




Product # 64-001060 64-002060 64-003060
Product name Krytox GPL 207 Krytox GPL 206 Krytox GPL 205
Service temperature range -30°C to +288°C -36°C to +260°C -36°C to +204°C
Density @ 0°C / 100°C 1.95g/cm3 / 1.78 g/cm3 1.95g/cm3 / 1.78 g/cm3 1.95g/cm3 / 1.78 g/cm3
Viscosity@ 20°C / 100°C 1540CSt / 42cSt 822CSt / 25cSt 522CSt / 18cSt
ISO grade of oil 460 220 150
Oxygen compatible Yes Yes Yes
Chemical resistance Excellent Excellent Excellent
Solubility Virtually insoluble Virtually insoluble Virtually insoluble
Components Pure PFPE / PTFE Pure PFPE / PTFE Pure PFPE / PTFE

Ordering information:

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