Description
The DuPont MOLYKOTE 4 Electrical Insulating Compound is a high-performance silicone-based material formulated to provide outstanding electrical insulation, moisture resistance, and long-term stability across extreme temperature conditions. Designed for professional and industrial use, this compound ensures reliable protection of electrical connections, terminals, and assemblies from corrosion, arcing, and leakage currents.
With a wide service temperature range from –40 °C to +200 °C, MOLYKOTE 4 maintains consistent performance under demanding environments, making it ideal for applications in aerospace, automotive, electronics, and laboratory equipment. This non-curing compound resists oxidation, water washout, and ozone exposure, ensuring extended component life and dependable dielectric protection.
Key Features
• High Dielectric Strength: Excellent insulation properties up to ~338 V/mil for dependable electrical protection.
• Wide Operating Range: Performs consistently from –40 °C to +200 °C.
• Moisture & Corrosion Resistance: Protects electrical terminals from humidity and environmental contaminants.
• Non-Curing, Silicone-Based Formula: Remains stable and flexible over time.
• Excellent Adhesion: Clings to metals, plastics, glass, and ceramics without hardening.
• NSF 51 & 61 Certified: Approved for incidental food and potable water contact.
• Chemical Stability: Unaffected by most oils, lubricants, and gases.
• Proven Performance: Trusted DuPont formulation used globally in critical electrical applications.
Applications
• Electrical Connectors & Terminals: Prevents corrosion and arcing in plug, socket, and cable assemblies.
• Switches & Relays: Provides dielectric insulation for long-term reliability.
• Battery Terminals & Ignition Systems: Protects against moisture and salt exposure.
• HVAC & Appliance Systems: Insulates and lubricates gaskets, O-rings, and seals.
• Aerospace & Defense Electronics: Used in critical circuits requiring stable dielectric performance.
• Laboratory & Instrumentation Equipment: Ideal for maintaining electrical integrity in sensitive instruments.
Benefits
• Long-Term Electrical Reliability: Stable dielectric performance even under high humidity.
• Corrosion Prevention: Seals out moisture, dust, and atmospheric contaminants.
• Versatile Compatibility: Safe for metals, plastics, glass, and rubber.
• Regulatory Compliant: Compliant for incidental food/water contact.
• Extended Service Life: Non-hardening formulation minimizes re-application needs.
• Trusted Global Standard: Used across multiple industries for over 50 years.
Product Specs
| Typical Use | Moisture-proof seal for aircraft, automotive, marine ignition systems; spark plug connections; electrical assemblies; assembly lubricant for metal-on-plastic and metal-on-rubber combinations |
| Brand | MOLYKOTE |
| Color | Translucent White |
| Components | 1 part |
| Dielectric Strength | 350 V/mil |
| Flash Point | >300 °C |
| Key Specifications | NSF 51 and 61, 21 CFR 175.30 |
| Service Temperature | –54 to 200 °C |
| Specific Gravity | >1 @ 25 °C |
| Spray | No |
| Volume Resistivity | 0.1 × 10¹³ ohm-cm |
Categories
• DuPont MOLYKOTE Compounds
• Electrical Insulating Materials
• Silicone Greases & Lubricants
• Industrial Maintenance Supplies
• Laboratory & Equipment Protection Compounds



