The physical strength of silicone rubber at room temperature is slightly inferior to that of other organic rubbers, but under high-temperature conditions, its strength is the most outstanding.
For instance, the compression set of silicone rubber after being pressurized at 150℃ for 70 hours is 7% to 10%. This low compression set makes it an excellent material for sealing parts such as O-rings, gaskets and washers used at high temperatures. In addition, special silicone rubber can also have radiation resistance.
For instance, phenyl silicone rubber has excellent high-temperature radiation resistance and can still maintain elasticity even when the Y-ray is as high as 1X109R.