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MECHANICAL SEAL  

MECHANICAL SEAL

2018-02-09 15:31:34

MECHANICAL SEAL

 Single or double acting mechanical seals are used to seal the shaft gland. Sealing is achieved through axial rotating faces which are pressed against each other by spring force and this prevents them opening when at rest. The stationary part of the mechanical seal usually sits in a housing and the rotating unit on the shaft sleeve. In the sealing gap between the sliding faces a lubricating film is generated by the pumped medium in order to prevent the rotating faces from running dry.
With the double acting mechanical seal two seals are arranged one behind the other so that an additional space occurs between the sliding face of the seals which in turn can be supplied with a pressurized external sealing medium. This ensures that no product can escape into the atmosphere.
Over the past few years the stationary mechanical seal has established itself in the market.With this design, contaminated and crystallizing media can be sealed optimally. Due to a special design, solids are kept away from the sealing gap and from the stationary O ring. In addition, the working spring is positioned outside the pumped medium.

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