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MOLYKOTE™ 4 Electrical Insulating Compound

Silmid P/N: VAR0000362
From £9.21 (excl VAT) £11.05 (Inc VAT)

Greaselike material containing an inert silica filler in combination with selected polydimethyl silicone fluids

Product Properties


Product Information

Molykote 4 Electrical Insulating Compound can be applied by hand, specially designed automated equipment, brushing or wiping. Certain designs of grease guns may seize up with silicone compounds; test prior to use. A thinner consistency can be achieved by dispersing in solvents such a xylene, mineral spirits and methyl ethyl ketone. Dowsil 4 Compound can then be applied by brushing, dipping or spraying.

Molykote 4 Compound should not be applied to any surface which will be painted or finished. Such coatings may not adhere to the silicone-treated surface. If contaminated by a silicone coating, parts can be wiped or washed with solvent, washed with detergent, or immersed in an alcoholic potassium hydroxide solution and then rinsed in clear water before painting.


A moisture proof seal for aircraft, automotive and marine ignition systems and spark plug connections, disconnection junctions in electrical wiring systems also in electrical assemblies and terminals.

Used as a seal and lubricant for cable connectors, battery terminals, rubber door seals, switches and rubber and plastic O-rings and as an assembly lubricant for various metal-on-plastic and metal-on-rubber combinations.


  • High dielectric strength
  • Low volatility
  • Moisture resistant
  • Good thermal oxidation and chemical stability
  • Conforms to FDA 175.300, NSF 61 and NSF 51
  • Meets requirements of SAE AS 8660
  • Retains its grease like consistency from -55C (-67F) to +200C (392F)

Shipping information

Orders over £100 placed online will now qualify for FREE UK Mainland delivery*

Orders under £100 placed online for UK Mainland delivery is £12.00*

**Orders requiring Pre 10.00am Next Day delivery has also been lowered from £35.00 to £30.00, orders placed through the office will incur additional charges.** 

International delivery (door to door delivery) is available for selected countries worldwide. Shipping will be automatically calculated based on the weight, location and hazardous nature of the goods. Customers can also choose ex works to arrange their own collection.

Please refer to our delivery page for more information.