Silicone rubbers are rubber compounds with both organic and inorganic properties, as well as highly pure fumed silica as two main components. They possess many characteristics which are not present in other organic rubbers and have important roles in numerous industries, such as electrical, electronics, automobiles, food, medical, household appliances and leisure products. Silicone rubber is uniquely different from conventional rubber in that the molecule structure of the polymer consists of long chains of alternating silicone and oxygen atoms. This polymer therefore has an organic and inorganic nature. The inorganic part makes the polymer very resistant to high temperature and gives good electrical insulating properties and chemical inertness, while the organic components make it extremely flexible.