MOLYKOTE® 4 Electrical Insulating Compound
Overview
MOLYKOTE® 4 is a silicone-based, semi-flowable insulating compound designed for high dielectric strength and reliable electrical insulation. It offers excellent adhesion, moisture resistance, and stability across a broad temperature range (-54°C to 200°C).
Key Features & Benefits
- High dielectric strength for superior electrical insulation
- Good adhesion to metals, polymers, elastomers, and ceramics
- Semi-flowable rheology allows penetration into complex geometries
- Water-repellent and oxidation-resistant for durability
- Low volatility and evaporation ensure long-term performance
- Withstands extreme temperatures (-54°C to 200°C)
- Certified for safety standards (NSF 51 & 61, Kosher, Halal)
- Non-corrosive to metals and non-metals
Applications
Used for lubrication, sealing, and insulation in:
- Electrical connectors & battery terminals
- O-rings & rubber seals
- Industrial & transportation ignition systems
- Sealed electrical junctions & terminals
For higher consistency requirements, MOLYKOTE® 111, 5, or 112 may be considered.
How to Apply
- Can be applied by hand, brush, or wipe
- Shear can increase flow, benefiting complex applications
- Should not be applied to surfaces requiring painting or coating
Technical Properties
- Penetration (worked 60): 310 max
- Dielectric Strength: 338 volts/mil
- Volume Resistivity: 4.62 × 10¹³ ohm-cm (@23°C)
- Thermal Conductivity: 0.235 W/mK
- Arc Resistance: 225 seconds
- Low-temp torque (-54°C): 676 gm-cm starting, 197 gm-cm running
Storage & Packaging
- Shelf life: 60 months (unopened)
- Stored in standard containers; sizes available at molykote.com
MOLYKOTE® 4 ensures long-lasting electrical insulation and sealing, making it ideal for demanding industrial and electronic applications.
