Molykote® PG-21 is a high-performance synthetic bearing grease formulated for clean, low-speed lubrication of plastic and metal components. It offers long-term lubrication, low noise, and stable operation under elevated temperatures. Its strong compatibility with engineering plastics and elastomers makes it suitable for electric motors, office devices, fan systems, plastic gearboxes, and automation components requiring clean, durable lubrication.

• Wide Temp Range – Molykote® PG-21 operates reliably from −50 to +190°C, maintaining viscosity stability verified through base-oil viscosity testing at 25°C. This wide thermal tolerance enables consistent lubrication during cold starts, continuous heating cycles, and high-temperature equipment operation without significant structural breakdown.

  
  

• Oxidation Resistance – The grease resists oxidative thickening when exposed to airflow and heat, as demonstrated through long-term oxidation stability measurements. This property preserves lubrication film integrity, extends service life, and reduces maintenance requirements for devices operating for extended hours.

  
  

• Water Resistance – Molykote® PG-21 Grease maintains its lubricating performance in humid, splash-loaded, or condensation-prone environments. Water-washout testing shows low mass loss, confirming its ability to retain adhesion and protect parts from moisture-related operational instability.

  
  

• Plastic Compatibility – Its formulation shows excellent compatibility with common engineering plastics and elastomers, validated through material-interaction testing where swelling and surface degradation values remain minimal. This allows reliable lubrication of plastic gears, bearings, sliders, and assemblies without risking deformation or stress-cracking.

  
  

• Low Volatility – The grease demonstrates low evaporation loss in elevated-temperature volatility tests, helping maintain a stable lubricating film over long periods. This minimizes residue formation, prevents dry-out, and ensures smooth, predictable motion in sealed or semi-sealed systems.

• Consumer Electronics – Molykote® PG-21 Grease is used in cooling fans, drive assemblies, plastic gears, and motion components inside home electronics to ensure quiet performance, long service life, and stable lubrication under frequent start-stop operation.

  
  

• Office Equipment – Suitable for printers, copiers, feeders, and small mechanical modules where low-noise operation and plastic compatibility are essential, supporting reliable motion in high-duty usage cycles.

  
  

• Home Appliances – Applied to small motors, hinges, sliders, and bearings in refrigerators, air purifiers, washing devices, and similar equipment, supporting smooth, long-lasting motion under temperature fluctuations.

  
  

• Precision Instruments – Used in fine mechanical movement assemblies requiring controlled friction, stable damping, and clean lubrication, preventing mechanical deviation in sensitive equipment.

  
  

• Industrial Machinery – Provides dependable lubrication in lightweight gearboxes, automation modules, and small bearing systems in industrial environments where mixed-material assemblies require clean, stable grease performance.