★★ Xuhui silicone rubber O-ring Which is better? All in Shanghai excellent sealing! The rapid economic development, the upgrading of machinery to bring science and technology to accelerate a variety of mechanical seals also followed to a more economical and environmental aspects of development. ★★ excellent supply silicone rubber seal (SI) O-ring | Viton (FKM) O-rings | ethylene propylene diene monomer (EPDM) O-ring | nitrile butadiene rubber (NBR) O-rings | teflon (PTFE) O-ring, and so on. High quality seals welcome your advice. ★★ silicone rubber (SI) O-ring - sealed Technology Co., Ltd. Shanghai gifted July 24, 2015 release. ★★ rubber seal is made of latex rubber tree plant, rubber grass, processed seal made of elastic, insulating, impermeable and air. Silicone rubber (SI) O-ring is obtained based on these materials. Silicone rubber (SI) O-ring temperature range: -60 ~ 250 ℃; pressure up to 1500Kg / cm2 (and reinforcing ring and use). Excellent heat resistance and cold, but the weather resistance, alkali resistance and water resistance worse than other rubbers. ★★ Shanghai excellent sealing silicone rubber (SI) O-ring use advantages: 1, easy to silicone rubber (SI) O-ring installation. Environmental non-toxic, tasteless, high elasticity, tensile and strong; 2, good sealing performance, simple structure. Silicone rubber (SI) simple O-ring cross-sectional structure, a self-sealing, reliable performance. 3, long-term use does not change color, the same smell, super high temperature resistance, can be used for microwave and refrigerator; 4, the production standardization, wide application, through appropriate formulation can be realized on oil, water, air, gas and various effective seal chemical media; 5, after rigorous testing by UL, FDA, SGS, ROSH, ATC, ISO9000 and other relevant certification. ★★ common use specifications: 12 * 40 * 10 35 * 55 * 10 135 * 165 * 20; 18 * 30 * 850 * 70 * 12 170 * 200 * 20; 20 * 40 * 10 50 * 75 * 16 240 * 280 * 25; 25 * 60 * 40 * 10 * 15 250 * 90 290 * 30; 30 * 45 * 1070 * 100 * 16 340 * 380 * 40 and so on. Silicone rubber (SI) O-ring for locomotives, cars, tractors, construction machinery, machine tools and various hydraulic and pneumatic components such as seals. If necessary, the sealing can be described as excellent custom seals.