Krytox™ 240AB is a white buttery grease formulated from clear, colorless, fluorinated synthetic oils that are nonreactive, nonflammable, safe in chemical and oxygen service, and are long-lasting. Meets MIL-PRF-27617 Type II and NATO G-398
Viscosity (cSt): @20°C (68°F): 240 @ 38°C (100°F): 86 @ 99°C (210°F): 10.5 @ 204°C (400°F): 2.1 Vapor Pressure of Base Oil: @ 38°C (100°F): 5 x 10 e -6 @ 260°C (500°F): 3 x 10 e -2 Volatility of Base Oil (wt% loss in 22 hr.): @ 149°C (300°F): 1.9 @ 204°C (400°F): 17.3 @ 260°C (500°F): 76.2 Pour Point of Base Oil: -40°C (-40°F) Texture: Buttery NLGI Grade: 2 Mechanical Stability (ASTM D217 10,000 and 100,000 strokes): No change Oxidation Stability @ 99°C (210° F): 0 psig pressure drop after 600 hr Liquid Oxygen Impact (ASTM D2512, NASA MSFC 106B): Pass Grease Density (at 25°C/77°F): 1.92 g/mL Oil Separation (wt% loss in 30 hours): @ 99°C (210°F): 4 @ 204°C (400°F): 12 Estimated Useful Range: -40°C to 232°C (-40°F to 450°F) Qualification Reference Number: AFPET/PTP 08-012 MIL-Spec: MIL-PRF-27617 Tyler 2 NATO Number: G-398 Change in Worked Penetration: +3 Corrosion on Copper (2b max): 1b High Temperature Bearing Performance (500 hr min at 10,000 rpm, 204°C): Stopped at 1,320 hr Evaporation % (ASTM D-2595): 10.1 Solubility in Fuel (%): 0.3 Water Washout Characteristics (%): 0.25 Dirt Count: 75 micron and larger: 0 25-75 micron: 0 Resistance to Aqueous Solution: Distilled Water: Pass 50/50 Distilled Water/Ethanol: Pass Film Stability and Corrosion on Steel: Pass
Primary Chemistry: PFPE
Features & Benefits
Meets MIL-PRF-27617 Type II Meets NATO G-398 Low to medium viscosity Low outgassing Non-flammable Broad temperature performance NSF H-1 food grade
Bearings, control switches, gauges, quick connectors, o-rings, gaskets, and seals
Krytox™ greases are nontoxic lubricants that maintain their lubricity and viscosity properties to reduce maintenance costs associated with re-lubrication, component failure, and downtime in demanding applications. They are created by thickening synthetic perfluoropolyether-based oil (PFPE) with polytetrafluoroethylene (PTFE) powder.
Talk to an Expert
ChemPoint has experienced product specialists on staff to provide our customers support in finding the right solution for their project. Talk to us, we can help.