Fluorine rubber performance characteristics

Fluorine rubber performance characteristics Fluorine rubber (FKM or Vtion) is a polymer containing fluorine atoms on the main chain and side chain carbon atoms, also known as fluoroelastomers. From the early 1950s, the United States and the former Soviet Union began to develop fluoroelastomers. The first ones put into production are vtionA and Kel-F of DuPont and 3M. After half a century of development, fluoroelastomers have achieved rapid development in terms of heat resistance, material resistance, low temperature resistance, technology, etc., and formed a series of product. Fluorine rubber has excellent heat resistance, ozone resistance and performance of various hydraulic fuels. Its working temperature in air is -40~250℃, and its working temperature in hydraulic oil is -40~180℃. Due to the processing, bonding and low temperature performance of fluorine rubber seals is worse than that of general rubber. The price is also relatively expensive, so it is mostly used for high-temperature substances that ordinary rubber is not capable of, but it is not suitable for some phosphate ester solutions. In addition to the general requirements for sealing ring materials, the sealing ring should also pay attention to the following conditions: (1) Rich elasticity and resilience; (2) Appropriate mechanical strength, including expansion strength, elongation and tear strength, etc. . (3) The performance is stable, it is not easy to swell in the medium, and the thermal shrinkage effect (Joule effect) is small. (4) It is easy to process and form, and can maintain precise dimensions. (5) It does not corrode the contact surface, does not pollute the medium, etc. 1. The structure is simple and the sealing performance is good. 2. Easy to install Because the O-type rubber sealing ring itself and the structure of the installation part are extremely simple and standardized, it is very easy to install and replace. 3. Wide range of application Through the selection of suitable rubber materials and appropriate formula design, the effective sealing effect on oil, water, air, gas and various chemical media can be achieved. Wide temperature range -60℃～+220℃), pressure can reach 1500Kg/cm2 in fixed use (used together with reinforcing ring)
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