Krytox 250AD

Krytox 250AD grease is black a grease that contains molybdenum disulfide added as an extreme pressure additive for highly loaded gears and bearings.

Highest viscosity in the 250 Series with a viscosity of 502 cSt at 38°C and 44 cSt at 99°C. Temperature range is -29 to 316°C.

Krytox Aerospace Lubricants were initially developed by DuPont in the early 1960s specifically for the precise and demanding lubrication needs of the aerospace industry. Krytox synthetic lubricants have since replaced hundreds of special-formula, hydrocarbon-based oils and greases throughout the aerospace and aviation industries, thanks to a long list of superior performance characteristics and certifications. Since the first commercial application over 50 years ago, Krytox synthetic lubricants have delivered consistent, superior, reliable and extended performance. Today, with new additives for new challenges, Krytox lubricants continue to deliver extreme performance under the most extreme conditions. Krytox 250AD 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 mount systems associated with aircraft engines, such as an oil tank mount bracket for a Trent 1000 engine.

Krytox lubricants can be used to improve the performance of traditionally non-lubricated materials, such as DuPont™ Vespel® CR-6100 bushings.

The polymer chain is completely saturated and contains only carbon, oxygen, and fluorine. On a weight basis, 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, whose formula is (CF2-CF2)n. This special high-efficiency thickener has a melting point of 325°C (617 °F) and has low molecular weight and submicron (0.2 μ) particle size for higher performance in bearings.

Technical data

Viscosity @ 20 ° C (68 ° F): 1540 cSt
Food Grade Compatible (H1): No
Meets MIL-PRF-27617: Yes
Estimated Useful Range: -34 ° C to 288 ° C (-20 ° F to 550 ° F +)
Grease Density @ 25 ° C (77 ° F):: 1.93 g / ml
Oil Pour Point: -30 ° C (-20 ° F)
Primary Chemistry: PFPE

Features & Benefits

• High Viscosity - 502 cSt @ 38 ° C
• Non-flammable
• Non-Reactive / Chemically Inert
• High Load Capability
• Krytox 250AD is made for higher pressure applications where Krytox ™ 240AD would see oil-filler separation

Applications

• Bearings
• Seals
• Valves
• Oxygen Devices
• O-Rings
• Threads

Where to buy Krytox 250AD?

Hicotech Vietnam Co., Ltd is the distribution representative of Chemours in Vietnam.

Krytox 250AD distributed by Hicotech origin: USA 100%

Krytox 250AD have different packages such as: 0.5 oz, 1oz, 2oz; tube 2oz, 4oz, 8oz; box 0.5kg, 1kg; 5kg, 7kg, 20kg pail.