The unique properties of silicone rubber over a wide temperature range -65° to 315° C (-85° to 599°F) reflects the use of many new applications for this very versatile material. Engineers have discovered many other properties that are significant. The special properties of silicone polymers result from their molecular structure. They are unique in combining some of the features of silica, silicate minerals, and organic compounds.
The basic difference between silicone and organic polymers is the organic compounds have a back bone of carbon-to-carbon atoms, while the silicone back bone is composed of alternating silicone-oxygen linkages.
Silicones have an immunity to the deteriorating effects of ozone, corona, weathering, and other forces. The inherent heat resistance of silicone rubber is well known. Special compounds will offer useful service life at temperatures up to 315°C (599°F).