Silicone Grease

Silicone Grease

Silicone greases are formulated to provide very durable, non-setting, work stable products used to lubricate, electrically insulate and act as a heat transfer medium. They provide excellent protection against moisture and other harsh environmental conditions. Silicone polymers, in general, exhibit good resistance and remain stable when operating in an environment with elevated temperatures and silicone greases are no exception.

It is particularly important that the grease remains stable during storage and when in use. Some formulations may have the tendency to split or separate slightly allowing small amounts of silicone fluid to rise to the surface – these can normally be mixed back in without detrimental effects.

For further information download our product guide to Silicone Greases.

Key Applications

Thermal Transfer

When combined with specialist fillers the silicone grease will allow the efficient transfer of heat from one surface to another. These materials are more precisely known as heat transfer compounds because they are not lubricants as such. Their main application is in micro-electronics where they are used to facilitate heat transfer from processors and other components to a suitable heat sink. If the component and the heat sink are simply placed together, the small air gaps that will naturally exist between them will inhibit heat transfer. By filling these gaps, the compound allows a direct path through which the heat can travel.

The ability of a material to transfer heat is quoted in W/mK – for a material to offer any significant benefit it has to have a figure above 0.4 W/mK. Standard silicone compounds will normally have a figure of 0.18 W/mK. ACC Silicones products have heat transfer compounds ranging from 0.77 W/mK up to 3.0 W/mK.

The obvious benefit of using a non-setting compound over a thermally conductive adhesive is the ease of use.

Electrical & Electronics

Silicone polymers have very good electrically insulating properties enabling silicone grease to be used as an electrical insulator and lubricant. On the micro level they can be used to lubricate switches, electrical contacts and cable joints.

On a much larger scale they have been used for many years on high voltage insulators to provide environmental protection and prevent arcing or corona discharge. The addition of a pink dye has enabled inspection to take place from a distance to see if the grease has remained in place.


Water repellency, combined with non-toxicity, make these greases an ideal choice for use with water pipes and fittings. ACC Silicones’ SGM494 has approval for use with hot and cold potable water from the UK’s Water Regulations Advisory Scheme (WRSA) ref 0502509. Applications include lubricating plastic fittings and stop taps.

Mould Release

Silicone grease is an excellent lubricant involving the following material interfaces:

  • Plastic to plastic
  • Rubber to rubber
  • Rubber to plastic
  • Plastic to metal
  • Rubber to metal

These greases can also be used as a heavy duty mould release for the plastics and rubber industry.

Caution: Silicone grease should not be used for metal to metal high load bearings as it will cause adverse w


SG500 SILCOTHERM thermally conductive silicone grease
SG502 SILCOTHERM silicone grease high thermal conductivity
SGM494 Silicone Grease
SGM496 Pink Silicone Grease HV Insulating
SGM496 White Silicone Grease HV Insulating


Let us suggest the best solution for your particular application, from our extensive range of products and services.

24 hour delivery

We maintain a large stock in our warehouse in Petersfield enabling fast and reliable delivery.


Unit 19, Buriton Business Park, Petersfield, Hants, GU32 3NJ
Tel: 01730 888499

Full in-house technical support

We are renowned for our high levels of customer support whether via phone, email, or on-site.

Field is required!
  • Solution
  • Solerding
  • Cleaning Chemistries
  • Anti Static
  • Gloves
  • Hand Tools
  • Adhesives
  • Silicones
Field is required!
Field is required!
Field is required!
  • Contact Preferences
  • Phone
  • Email
  • Both
Field is required!
Field is required!
Field is required!