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difference between metal bellows mechanical seals and ordinary mechanical seals

Hits:7602014-03-21 15:07:27 Source: http://www.king-seals.com/news/n14.html

Welded metal bellows mechanical seals has better floating and random compensation,

Can compensate for seal ring wear, axial and vibration and other causes of leakage.

Welded metal bellows mechanical seals itself both as a flexible element and play a sealing role,

There is no auxiliary seals in the middle of the metal bellows mechanical seals, reducing a leak point;

Compensation agencies frictional resistance, improved follow-up; in the petrochemical industry, welding bellows seal temperature

Auxiliary seal from the restrictions; for PTFE bellows seal can be used in corrosive media. There is also disadvantage for the bellows mechanical seals, the metal bellows mechanical seals  are  less elastic, need to add auxiliary spring.

Welded metal bellows is made by closely interlacing the inner and outer diameters of each wave plate. Therefore, it is not necessary to consider the steering problem whether it is used as a stationary or rotating type.

Welded metal bellows can choose precipitation hardened stainless steel, high temperature nickel-based materials and chromium-nickel-type corrosion-resistant materials such as manufacturing,

Therefore, welded metal bellows mechanical seals can be applied to a wider temperature range (-11 -426 ), and a variety of acid, alkali, salt medium. Choose different

The wave plate thickness, the number of layers to withstand a special pump up to about 7MPa pressure. Welded metal ripples

Tube sealing machine design is generally balanced, so the pressure on the end of the pressure is relatively small, welding metal bellows mechanical seal is not only suitable for non-hydrocarbon medium, but also for flash hydrocarbon medium. Close with ordinary machinery

Compared to its service life has also been greatly improved, so the metal bellows mechanical seals has a high cost performance.

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