MOLYKOTE 3451 Chemical Resistant Bearing Grease is a fluorosilicone-based, PTFE-thickened bearing grease developed for components exposed to aggressive chemicals, fuels, and environments with a wide temperature range from -40°C to 232°C. Unlike conventional silicone or mineral oil greases, MOLYKOTE 3451 maintains lubricating stability in environments where acids, solvents, or fuels rapidly degrade standard lubricants. Its formulation is optimized for sealed-for-life bearings and precision components requiring long-term lubrication without frequent relubrication, even under chemical attack and thermal cycling.

• Chemical Resistance - MOLYKOTE 3451 uses a fluorosilicone base oil with PTFE thickener, delivering resistance to most acids, solvents, fuels, and coolants. Laboratory compatibility data show stable lubrication performance within a service temperature range of -40°C to 232°C, with no significant oil breakdown or thickener collapse during chemical exposure testing.

  
  

• Wide Temperature Stability - MOLYKOTE 3451 remains operational from -40°C to 232°C, maintaining consistent grease structure across cold starts and elevated operating temperatures. This stability supports bearing protection during thermal cycling where conventional greases harden at low temperature or thin excessively under sustained heat.

  
  

• Load Carrying Ability - With NLGI Grade 2 consistency and PTFE solid lubrication, MOLYKOTE 3451 supports high-speed and moderate-load bearing operation. The grease maintains film integrity under continuous rotation, reducing metal-to-metal contact and minimizing wear in chemically aggressive environments.

  
  

• Material Compatibility - MOLYKOTE 3451 demonstrates good compatibility with most engineering plastics and elastomers, including silicone O-rings and sealing materials. This reduces seal swelling, cracking, or degradation during long-term exposure, supporting reliable sealing performance in sealed bearing designs.

  
  

• Low Volatility - The fluorosilicone base oil exhibits low evaporation rates compared with conventional silicone greases. This characteristic limits lubricant loss over time, supporting extended service intervals and stable lubrication in sealed-for-life bearings operating under heat and chemical exposure.