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What is the difference between mechanical seals and hydraulic seals

by:Lepu Seal     2020-03-24
In general it is difficult to distinguish between mechanical seals and hydraulic seals, often thought is the same thing. A, talk about mechanical seals and hydraulic seal mechanical seal are delicate and complex mechanical structure is one of the basic components, is all sorts of pumps, synthesis reaction kettle, key components of the turbine compressor, submersible motors and other equipment. The sealing performance and service life depends on many factors, such as selection, the precision of the machine, the correct installation use, etc. Hydraulic seal pressure demands, combined with the surface has a certain degree of finish, packing element with rubber, through the seal of the local deformation is closed. Second, the classification of the mechanical seal and hydraulic pressure seal mechanical seal type: container seal series, light series, heavy duty mechanical seal mechanical seal series hydraulic seals, lip seals, v-shaped sealing ring, u-shaped seal ring, the y-shaped sealing ring, YX seal ring and the combination of commonly used hydraulic cylinder seal is mainly grey ring, to ring and seal. Third, how to choose the seal when maintenance with the seals of choose and buy, most users will be according to the size of the sample and color to buy, it would only increase the difficulty of the purchase, and not necessarily can select suitable products. Recommend the following procedure to improve the accuracy of purchasing seals: 1. Direction - First decided to seal the movement direction of the location, such as reciprocating, rotating, spiral or fixed. 2. Seal focus - Decided to active point, for example, is the inner diameter of rod sealing or active point is the outer diameter of the piston seal etc. 3. Temperature rating - From the original mechanical instructions refer to or working temperature according to the actual working environment assessment, decided to use material required. About the temperature rating may refer to the following production of user attention. 4. Pressure level - From the original mechanical instructions refer to the relevant data, or by looking at the original seal structure and hardness of work stress level, the pressure level may refer to the following production of user attention. 5. Size - Most users will be used by the old sample of choose and buy, but the seal in use after a period of time, will be affected by factors such as temperature, pressure and wear greatly its original size, choose according to the samples can only be as a reference, a better approach is to measure seal metal slot size, location accuracy is higher.
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