Mechanical seal is a kind of auxiliary device, which is mainly used in some sophisticated or complicated mechanical components. It is often used in pump, reaction synthesizer, turbine compressor, submersible motor and other equipment. The fundamental function of mechanical seal is to maintain the precise combination of mechanical parts and to prevent liquid leakage from east China. Since mechanical seal is directly in contact with the product, there are strict requirements on its materials.

Seal selection is a very precise and complicated problem, first to determine the sealing structure and form, and then the most important is the choice of materials, material choice improper words it is often difficult to achieve sealing effect.

For the sanitary pump mechanical seal, because of the direct contact with the pump body, the selection and assembly of the friction pairs is the most important. First, consider the medium of the health pump, considering the chemical, temperature and working pressure of the sealed media to consider the suitability of the material. If the health pump is a chemical medium, consider using corrosion-resistant materials. If it is a food and drink beverage, you must choose non-toxic, heat-resistant materials to do mechanical seal. Health level self-priming pump.

The material group must match, and it is usually possible to consider the suitability of the combination from two aspects: the combination does not produce excessive wear, and the combination does not produce battery corrosion. With the improvement of material development and science and technology, a more suitable material for mechanical seal can be developed. Because friction is in pairs relative sliding, should not only consider the single ring wear, more important is two ring friction wear resistance, and materials of the friction pair, can ensure the self-lubrication of friction pair itself.

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