MOLYKOTE® 4 Electrical Insulating Compound

MOLYKOTE® 4 Electrical Insulating compound is a premium grease-like solution formulated from high-quality polydimethyl silicone fluids and inert silica filler.

MOLYKOTE® 4 Electrical Insulating Compound

MOLYKOTE® 4 exhibits a high dielectric strength and great moisture resistance, making it an ideal solution for long-term protection & lubrication for electrical connections & cable systems.  MOLYKOTE® 4 also has a low inherent volatility and meets several industry standards for food & water safe use, including NSF 51, NSF 61 and FDA Reg 21 CFR 175.300.


  • High dielectric strength
  • Low volatility
  • Moisture-resistant
  • Good thermal oxidation and chemical stability
  • Meets requirements of SAE AS 8660
  • Certification to NSF 51 and 61
  • Meets requirements of FDA 21 CFR 175.300
  • Retains its greaselike consistency from -40°C ( -40°F) to +200°C (392°F)
  • Odourless
  • Highly water-repellent
  • Adheres readily to dry metals, ceramics, rubber, plastics and insulating resins


MOLYKOTE® 4 Compound is a versatile lubricant solution, and can be safely used in a wide range of electrical applications, including:

  • Moisture Proof Seals for Ignition & Spark Plug Systems
  • Aircraft, Automotive, and Marine Sealing Applications
  • Electrical Wire & Cable Connections
  • Battery Terminal Protection
  • Switches
  • Metal-on-Plastic and Metal-on-Rubber Connections
  • Assembly Lubrication

MOLYKOTE® 4 Electrical Insulating Compound can be applied by many traditional methods, including by hand, brushing, wiping, grease gun and automatic dispensing systems.

Problems Solved

  • Excessive Electrical Arcing or Flashover
  • Damaged Electrical Connections from Moisture or Water
  • Melting or Smoking Lubricants from Electrical Exposure

Product Specifications

  • NLGI Grade: 2-3
  • Thickener: Silica
  • Low Temp: -40°C (-40°F)
  • High Temp: 204°C (392°F)
  • Color: Translucent White
  • Dielectric Strength (1.27 mm gap): 460 V/mil
  • Dielectric Constant at 100 Hz: 2.98
  • Arc Resistance (CTM 0171): 135 seconds


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