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MOLYKOTE® 4 Electrical Insulating Compound

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MOLYKOTE® 4 Electrical Insulating Compound is a semi-flowable, silicone-based lubricating compound with high dielectric strength for safe use in electrical systems, assembly, and terminals.

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Product Overview

MOLYKOTE® 4 Electrical Insulating Compound is a semi-flowable, premium, greaselike solution formulated from high-quality polydimethyl silicone fluids and inert silica filler.  MOLYKOTE® 4 exhibits high dielectric strength and great moisture resistance, making it an ideal solution for long-term protection and lubrication for electrical connections and cable systems.

MOLYKOTE® 4 also has low inherent volatility and meets several industry standards for food and water-safe use, including NSF 51, NSF 61, and FDA Reg 21 CFR 175.300.
 
 

Applications

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

Moisture-proof seals for ignition and spark plug systems
Aircraft, automotive, and marine sealing applications
Electrical wire and cable connections
Battery terminal protection
Switches
Metal-on-plastic and metal-on-rubber combinations
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
Semi-flowable consistency
Excellent water resistance and 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

Product type: Dielectric compound, lubricant
NLGI Grade: 2–3
Thickener: Silica
Low temperature: −40°C (−40°F)
High temperature: 204°C (392°F)
Color: Translucent white
Dielectric strength (1.27 mm gap): 460 V/mil
Thermal conductivity: 0.235 W/mK
Dielectric constant (ASTM D150, AMS8660):
at 1kHz: 2.8
at 1MHz: 2.89
at 10 MHz: 2.80

Dissipation factor (ASTM D150, AMS 8660):
at 1kHz: 0.0006
at 1 MHz: 0.0013
at 10 MHz: 0.0024

Specific heat (ASTM E2716):
at 50°C: 1.266 J/(g⋅°C)
at 100°C: 1.457 J/(g⋅°C)
at 150°C: 1.471 J/(g⋅°C)

Arc resistance (D495, AMS 8660): 225 seconds
Shelf life: 60 months from date of production in unopened, original containers

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