Compounds: Silicon

Description: Silicone rubbers are different from other kind of elastomers, because their molecules are not chains of atoms of carbon, but of silicon and oxygen alternated. The principal characteristic is the extreme resistance to the temperatures, in fact they doesn't change up to 250°C and they maintain the elasticity up to -150°C. Besides they also withstand excellently the oxygen and the ozone even if in hot temperatures. The mechanical characteristics are limited, the resistance to the chlorinated hydrocarbons and the oxygenated solvents is low. The presence of carbon black in high temperatures, could cause gas generation  and could favor the combustion.
For this reason only base layers backing and mineral charges can be used  (silice, kaolin, calcium carbonate).
Temperature of exercise: between the -50°C and the 200°C

Hardness: between the 30 and the 85 Shores

Chemical resistance: chlorinated, solvents, rays U.V., ozone, oxygen, cold and heat.

 Fields of application: gaskets for quartz lamps, gas and oil burners, containers for solid and liquid food stuff, teats, transparent covers.