Selection of the new polymer flexible silicone rubber as raw material, made of pipe, tube, contour seals, Qiantiao, threads of the excellent high temperature (200-280 ℃) and low-temperature-resistant properties, a good Physiological stability, with excellent return on the deformation (200 ℃ 48 clock more than 50 per cent), for the breakdown voltage (20-25 KV / mm), resistant to ozone, UV-resistant, widely used in Chinese medicine export, electronics , Lighter tube, pipe, guns, wire and cable, such as the protection of