Food grade silicone rubber seal

Overview of silicone rubber sealing ring: Overview of silicone sealing ring is mainly used for anti-silicone sealing ring water sealing and Fresh. Specifications It can be used for a long time in the temperature range of -60 degrees to +200 degrees. Performance 1. Has excellent sealing performance, waterproof and leak-proof. 2. Good preservation effect, completely non-toxic and tasteless. 3. It can be heated at high temperature without deformation and no harmful substances. 4. Good tensile performance, after special inspection and testing. 5. Long-term use will not yellow and fade. 6. Corona resistance, arc resistance, high and low temperature resistance, good aging resistance, high temperature resistance, in line with FDA and SGS standards. Advantages and disadvantages Advantages Heat resistance: silicone rubber has much better heat resistance than ordinary rubber, and can be used at 150°almost forever with no performance change, available at 200°Under 10,000 hours of continuous use, at 350°It can also be used for a period of time. Widely used in occasions requiring heat resistance, thermos seal ring, pressure cooker ring heat-resistant handle. Cold resistance: ordinary rubber is delayed for—20°—30°, that is, the silicone rubber is—60°—70°It still has good elasticity, and some specially formulated silicone rubbers can also withstand extremely low temperatures [1], such as low temperature sealing rings. Disadvantage: It is not recommended to be used in most thickened solvents, oils, thickened acids and diluted sodium hydroxide. Fluorosilicone rubber (FSI) O-ring Fluorosilicone rubber, also known asγ-Trifluoropropyl methyl polysiloxane, generally 0.2% ~ 0.4% vinyl siloxane copolymerization modification is introduced into the molecular chain, colorless and transparent high viscous plastic linear polymer compound, the main chain is composed of silicon and It is composed of oxygen atoms, and the side groups connected to silicon are methyl, vinyl and trifluoropropyl, and the molecular weight is between 500,000 and 800,000. With various additives, it can be mixed into a homogeneous rubber seals compound. Under the action of organic peroxides, it can be vulcanized into various elastic rubber products. In addition to the characteristics of general silicone rubber, it also has excellent resistance to aviation fuel oil, hydraulic pressure Oil, motor oil, chemical reagents and solvents and other properties.
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