Heat resistance: Silicone rubber has much better heat resistance than ordinary rubber and can be used almost permanently at 150 degrees without any performance change. It can be used continuously for 10,000 hours at 200 degrees. It can also be used for a period of time at 350 degrees. Widely used in heat-resistant applications: thermos flask sealing rings, pressure cooker rings, heat-resistant handles.
Cold resistance: Ordinary rubber has a temperature range of -20 to -30 degrees Celsius, while silicone rubber still maintains good elasticity at -60 to -70 degrees Celsius. Some specially formulated silicone rubbers can even withstand extremely low temperatures.
Weather resistance: Ordinary rubber rapidly degrades under the action of ozone produced by corona discharge, while silicone rubber is not affected by ozone. Moreover, even when exposed to ultraviolet rays and other climatic conditions for a long time, its physical properties only undergo minor changes. The electrical properties of sealing materials used outdoors: Silicone rubber has a very high resistivity and its resistance value remains stable over a wide range of temperatures and frequencies.
Electrical properties: Silicone rubber has a very high resistivity and its resistance value remains stable over a wide range of temperatures and frequencies. Meanwhile, silicone rubber has excellent resistance to high-voltage corona discharge and arc discharge. High-voltage insulators, TV high-voltage caps, electrical components, others
Conductivity: When conductive fillers (such as carbon black) are added, silicone rubber has conductive contact points for keyboards
Thermal conductivity: When certain thermal conductive fillers are added, silicone rubber acquires thermal conductivity. Heat sink thermal sealing gasket, copier and fax machine thermal roller.
Radiation resistance: The radiation resistance of silicone rubber containing phenyl groups is greatly enhanced. Electrical insulation cables, nuclear power plant connectors, etc
Flame retardancy: Silicone rubber is flammable by itself, but when a small amount of flame retardant is added, it has flame retardancy and self-extinguishing properties. Moreover, since silicone rubber does not contain organic halides, it does not smoke or release toxic gases when burning.
Air permeability in various strict fire prevention scenarios: Silicone rubber films have better air permeability than ordinary rubber and plastic waxed films. Another feature of it is that it has strong selectivity for different air permeability rates.