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MOLYKOTE® 4 Electrical Insulating Compound


NLGI Grade 2-3 – Silicone-based compound with high dielectric strength for safe use in electrical systems, assembly & terminals


Product Overview

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


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
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.

Features & Benefits

Great Surface Adhesion
Excellent Water Resistance & Repellency
NSF 51 and NSF 61 Certified Performance
Meets FDA Reg 21 CFR 175.300
Broad Thermal Stability (-40°C to 200°C)
Good Chemical Stability
High Dielectric Strength
Low Volatility

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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