Silicone greases are formulated to provide very durable, non-setting, work stable products used to lubricate, electrically insulate and function 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.
CHT manufactures two types of silicone grease:
When combined with special fillers, silicone grease will allow the efficient transfer of heat from one surface to another. These materials are also referred to as Heat Transfer Compounds because they are not used as lubricants. 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 naturally exists between them will inhibit heat transfer. By filling these gaps, the compound allows a direct path through which the heat can travel.
The benefit of using a non-setting compound over a thermally conductive adhesive is the ease of use and the ability to rework the component.
Silicone polymers have very good electrical 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, silicone polymers 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 repellence, combined with non-toxicity, make these greases an ideal choice for use with water pipes and fittings. CHT's 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.
Silicone grease is an excellent lubricant involving the following material interfaces:
Other applications include:
Finding the right silicone for your application is not limited to CHT’s product portfolio. Our technical team will partner with you to either modify specifications in a current product or custom formulate a new one to meet your exact requirements
For additional information download our CHT Silicone Grease Report or for technical assistance and sample requests, please visit our contact page.