MOLYKOTE® 4 Electrical Insulating Compound is an NLGI Grade 2–3, silicone-based, semi-flowable compound with a silica thickener for moisture-proof sealing. It is commonly used in electrical assembly.
MOLYKOTE® 4 Electrical Insulating Compound is a silicone-based greaselike lubricant product that can be used across a broad range of equipment types and applications. MOLYKOTE® 4 Compound provides high dielectric strength and excellent water repellency, making it an ideal solution for moisture-proof seal performance in aircraft, automobile, and marine vehicle ignition systems.
MOLYKOTE® 4 is translucent, odorless, and maintains a semi-flowable, greaselike lubricant consistency across a broad operating temperature range of −40°C to 200°C (−40°F to 392°F).
Product type: Lubricant compound
Chemistry: Silicone
NLGI Grade: 2–3
Thickener: Silica
High temp: 204°C
Low temp: −40°C
Color: Translucent white
Hazmat: No
Certifications: NSF 51, NSF 61, SAE AS 8660, FDA 21 CFR 175.300
Volume resistivity (23°C min): 1x1013
Waterproof seal: Pass
Insolubility 8-day soak: Pass
Leaky or poorly sealed O-rings Water contamination, infiltration, or rust Insufficient or variable dielectric strength
DuPont MOLYKOTE® 4 Electrical Insulating Compound can be used in a broad range of lubricating and sealing applications, including but not limited to the following: Metal-on-plastic and metal-on-rubber surfaces Cable connectors O-rings (polymer and elastomer) Moisture-proof sealing Battery terminals Terminals requiring semi-flowable consistency Rubber seals Switches Assembly lubricant Ignition systems Spark plug connections Disconnection junction MOLYKOTE® 4 Compound was previously known as Dow Corning 4 of Dow Corning DC-4 silicone compound.
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