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What is silicone rubber?

Silicone rubber is a unique synthetic elastomer made from a cross-linked polymer which is reinforced with silica. Its characteristics are such that it provides the perfect balance of mechanical and chemical properties required by many of today's most demanding applications.

Silicone rubber excels in the following areas:

* High and low temperature stability
* Inertness (no taste or smell)
* Translucent and easy to color
* Wide hardness range, 10 - 80 Shore A
* Chemical resistance
* Weatherability
* Sealing performance
* Electrical properties
* Compression set resistance

In addition to the excellent properties above, silicone rubber is extremely easy to fabricate, particularly when compared to conventional organic elastomers. Silicone rubber flows very easily, and as a result can be molded, calendered or extruded using relatively low amounts of energy. This ease of fabrication results in high productivity rates.

Silicone rubber is available in the following forms:

*Compounds: These ready to use materials can be pigmented and catalyzed specifically for your processing equipment and end application.


*Bases: These silicone polymers also contain a reinforcing filler. Rubber bases can be further compounded with pigments and additives to produce a compound that meets your color and other fabrication needs.


*Liquid silicone rubber (LSR): This is a two-component liquid rubber system that can be pumped into a suitable injection molding machine, then heat cured to produce molded rubber parts.


*Fluorosilicone rubber compounds and bases: Fluorosilicones maintain many of the key properties of silicone, but gain the characteristic of superior chemical, fuel, and oil resistance.

Media Source Dow Corning

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