Seals are widely used in life, and seals are used in basic things with the machine. It's as big as a car plane, small to a lighter mouse, and so on. They all have to be used for seals. There are many varieties of seals. According to raw materials, they can be divided into: comparison of common silicone rubber seals, fluororubber seals, ethylene propylene rubber, polytetrafluoroethylene, neoprene, polyurethane and so on. It can be divided into acid proof seal, alkali proof seal, high temperature seal, low temperature seal, oil proof seal and so on. Many machinery without seals can not work, for example, oil seal bar, if there is no oil seal, it may leak oil, and even the machinery can not work. The oil leaked the news often seen on television, in fact, that is the seal is not good, perhaps can not seal quality. The seal is an important part of the machine and plays an important role in the operation of the apparatus. In order to avoid the entry of foreign objects, it is necessary to use seals in the machinery.
A seal that is not of the same use. It can work in a different environment. For example, high and low temperature environment, acid and alkali solution, oil resistance and so on. The sealing parts in the different environment should choose different materials, such as the high temperature resistance of fluoro rubber. Important factors sometimes seal hardness is affected by living in the hair, not all seals are soft, such as PTFE sealing stiff. Mechanical seals should be checked frequently. It is found that the abnormality should be replaced in time, for example, the deformation and cracking of seals, etc. the main factor affecting the service life of seals is the running environment. Temperature is the main factor affecting the hardness of the seal. In order to increase the elasticity of seals at low temperature and decrease the permanence of data compression, we need to improve the formulation of data and add a certain amount of plasticizers into the rubber. In a long time soaking in the operating medium, the plasticizer will gradually be absorbed by the operating medium, forming a seal and shortening the aging. So the seal should be often checked. Avoid the onset of aging.
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