| Mechanical seals can be classified by usage condition (atmosphere, pressure, velocity) into |
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(1) corrosion-resistant mechanical seals. |
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(2) mechanical seals for high pressure liquid mediums. |
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(3) high speed rotation mechanical seals. |
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(4) high-and very low- temperature mechanical seals. |
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(5) mechanical seals for gas medium. |
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(6) general purpose mechanical seals. |
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Seal rings of mechanical seal required wear resistance, good sliding characteristic as well as corrosion resistance,especially the seal rings of mechanical seal which used under severe corrosive conditions such as strong acid and strong alkali solution in chemical plants, the sleeve and bearing supports a shaft of vertical shaft mixed flow pumps which are an example of large flow pumps. Cemented Carbide seal rings are widely used in all those classifications include extremely severe condition
