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Krytox™ 240 AC Performance Lubricant

Krytox™ 240AC is a MIL PRF-27617 TYPE III  and NSF H-1 certified grease . It also meets many ASTM specifications.

Krytox™ 240AC has a viscosity of 800 at 20 ° C and 270 cSt at 38 ° C, making it ideal in situations where a high viscosity grease is required. The ideal temperature of this fat is -34 to 288 ° C.

Krytox™ 240 AC Performance Lubricant

Krytox™ 240 AC grease is based on perfluoropolyether oils (PFPE). These synthetic fluorinated lubricants are used in extreme conditions, such as continuous high temperatures up to 300 ° C (572 ° F) and higher temperatures for shorter periods, depending on the product grade limits. Chemically inert and safe to use around hazardous chemicals, these lubricants are non-flammable and safe for use in oxygen service.

In the aerospace industry, Krytox™ 240AC grease is applied in various configurations, from bearings and sealants to O-rings and oxygen systems. Krytox is a valuable asset to the aerospace industry due to its superior performance over a wide range of temperatures ranging from 70 to 399ºC (-100 to 750ºF). Additionally, it is robust in harsh environments and has excellent friction properties, allowing it to resist changes in properties over time, providing increased wear and lower power consumption.


  • Carbon, oxygen and fluorine
  • Polytetrafluoroethylene additive

Characteristics of Krytox™ 240AC

  • Low coefficient of friction
  • Good resistance to water
  • superior performance with advanced high temperature stability characteristics
  • Non-flammability
  • Chemical and biological inert
  • High load capacity
  • Registered in NSF as category H1 for “accidental contact with food”

Krytox™ 240AC Applications 

It can be used in:

  • Gaskets for coupling the oxygen system, valves, regulators etc.
  • Liquid fuel rocket engines and ground support systems
  • Instruments, gyros and gimbal
  • Seals, valves and pneumatic systems
  • Bearings
  • Threaded guides and ball screws
  • Electromechanical actuators
  • Ribbed shaft couplings for auxiliary motors
  • Non-conductive lubricant for sealing electrical connectors
  • IR and optical sensors


  • MIL PRF-27617
  • NSF H-1 Rated
  • ASTM D445
  • ASTM D2595
  • ASTM D97
  • ASTM D217
  • ASTM D942
  • ASTM D2512
  • ASTM D6184

Sizes Available

Syringe Tube Jar Cartridge Pail
0.5 oz. 2 oz. 0.5 kg 0.8 kg 5 kg
1 oz. 1 kg 7 kg
2 oz. 8 oz. 20 kg

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