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KRYTOX 250 AD

KRYTOX™ 250 AD Extreme Pressure Performance Lubricant

Krytox™ 250 AD is a black grease containing molybdenum disulfide added as an extreme pressure additive gear and bearing high load. It offers the highest viscosity of the 250 Series with a viscosity of 502 cSt at 38 ° C and 44 cSt at 99 ° C. The operating temperature range of Krytox™ 250 AD is -29 to 316 ° C.

KRYTOX™ 250 AD Extreme Pressure Performance Lubricant

Krytox™ 250 AD is the lubricant of choice for demanding conditions: high and low temperatures, extreme pressure and harsh environments. Krytox greases are used in a variety of limited motion mounting systems associated with aircraft engines, such as an oil tank mounting bracket for a Trent 1000 engine.

Since the first commercial application over 50 years ago, Krytox™ Lubricants have provided consistent, superior and long-lasting performance. Today, with new additives for new challenges, Krytox™ lubricants continue to provide extreme performance in extreme conditions. 

The polymer chain is completely saturated and contains only carbon, oxygen, and fluorine. In terms of weight, a typical Krytox™ oil contains 21.6% carbon, 9.4% oxygen, and 69.0% fluorine. All standard grades of grease are thickened with high-efficiency PTFE, the formula of which is (CF2-CF2) n. This special high-efficiency thickener has a 325 ° C (617 ° F) melting point and has low molecular weight and submicron (0.2 μ) particle size for increased bearing performance.

Composition

  • Carbon, oxygen and fluorine
  • Polytetrafluoroethylene additive

250 AD Features

  • 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™ 250 AD 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

Regulations 

  • 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. 4 oz. 1 kg 7 kg
2 oz. 8 oz. 20 kg

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