Silicone rubber has a high resistivity and remains stable over a wide range of temperature and frequency scales. At the same time, silicone has good resistance to high-voltage corona discharge and arc discharge, such as high-voltage insulators, TV high-voltage caps, electrical parts, etc.

Silicone is mainly divided into industrial grade silicone and food grade silicone two kinds. Silicone has the following characteristics: 1, resistant to high and low temperature (-40 °C -230 °C); 2, anti-slip effect is excellent; 3, insulation; 4, waterproof; 5, wear-resistant; 6, environmental protection and non-toxic; 7, color and hardness can be customized; 8, can produce food grade silicone. It is precisely because of these characteristics, so the industrial grade is widely used in electronics, electrical appliances, machinery, toys, handicrafts and furniture and other products, as a machine work buffer, fasteners, can play a non-slip, shockproof, anti-collision, anti-static, high temperature resistance role, better protection of the machine, reduce losses. Food-grade silicone is generally used to produce bottle cap gaskets in contact with food or medicine, as well as water dispensers, cups, thermos bottles, bathrooms and other products that are in direct contact with food for sealing and fastening. The method of identifying whether it is silicone or not is also very simple, and any color of silicone will only produce a white powder after combustion.