Molykote 33L is a lithium-thickened silicone lubricant designed for light-load bearings, seals and high-speed sliding interfaces that require reliable performance under extremely low and elevated temperatures. The white-paste consistency spreads evenly into thin films, ensuring predictable torque, low friction and stable operation in mechanisms made from metals and engineering plastics.

• Wide range - Molykote 33L delivers stable lubrication across temperatures ranging from approximately minus 73 degrees Celsius to 180 degrees Celsius, enabled by a silicone base oil with a viscosity near 100 square millimeters per second at 25 degrees Celsius. This viscosity profile supports fluid motion under extreme cold while maintaining sufficient lubricity when internal temperatures rise during operation. 

  
  

• Oxidation resist - The lubricant has a strong resistance to degradation when exposed to elevated temperatures and oxygen for extended durations. Controlled aging tests at 150 degrees Celsius for 1000 hours show minimal change in worked penetration and an absence of sludge formation. 

  
  

• Water resist - Molykote 33L maintains an effective lubricating film in humid, wet or splash-prone environments. Standard water-washout testing at 38 degrees Celsius typically shows low mass loss. Additional humidity cabinet testing at relative humidity near 95 percent demonstrates stable rotational torque in geared plastic assemblies and minimal corrosion on exposed metal components. 

  
  

• Material safe - The lubricant demonstrates compatibility with a wide range of engineering plastics and elastomers including acetal, nylon, polycarbonate, nitrile rubber and silicone rubber. Immersion studies conducted at 70 degrees Celsius show minimal changes in hardness and volume,  that the base oil does not extract plasticizers or cause swelling. 

  
  

• Low volatility - Molykote 33L exhibits low evaporation rates during thermal exposure, as demonstrated by evaporation testing at 99 degrees Celsius for 22 hours, which typically results in less than one percent mass loss. Low volatility helps retain the lubricant within sealed or semi-open mechanisms, ensuring that a consistent film remains on contact surfaces.

• Electronics use - Molykote 33L is applied in electronic and optical devices that require stable low-load motion, such as micro gears, sliders and precision adjustment units. Its consistent viscosity supports accurate positioning in modules affected by temperature variation. The grease limits evaporation inside sealed housings, helping reduce particle or film deposits on sensitive surfaces.

  
  

• Automotive use - In vehicles, Molykote 33L lubricates HVAC controls, dashboard switches and small actuators that must function smoothly in both cold-start and high-cabin temperatures. The grease maintains predictable torque during seasonal changes, supporting consistent tactile response.

  
  

• Industrial gear - Molykote 33L is used in light-load mechanisms inside industrial equipment, including control knobs, sensors and precision linkages. It supports stable motion where consistent calibration is required, especially in devices exposed to continuous cycling. The grease resists oxidation, enabling long service intervals in enclosed housings that accumulate heat. 

  
  

• Cooling systems - Refrigeration and freezer equipment use Molykote 33L to lubricate dampers, control levers and fan linkages that must operate at very low temperatures. The grease remains mobile at sub-zero conditions, supporting smooth start-up during temperature cycling. It resists moisture from condensation, allowing stable function in humid internal chambers. 

  
  

• Plastic rubber - Molykote 33L is suitable for systems using plastic and rubber components that require controlled friction, such as seals, sliding joints and small gears. The grease shows minimal interaction with elastomers, limiting swelling or hardening during extended use. Tests with common engineering plastics demonstrate stable material properties after long-term contact.