MECHANICAL SEAL

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                                                                                                                                                                                                                                                                                                                                   MECHANICAL SEAL has the purpose of preventing leakage of a fluid(liquid or gaseous)through the clearance between a shaft and the fluid container.
The main component of a mechanical seal is the seal rings on which a mechanical force is acting,
generated by spring or bellows,  and  an hydraulic force, generated by the process fluid pressure,

The seal ring which rotates with the shaft is called the ''rotary ring ''the seal ring fixed on the casing of the machinery is called the ''stationary ring'' secondary seals are required to perform static sealing between rotary rings and shafts and also between stationary rings and the casing of the machinery.

elastomeric O-RINGS are usually used as secondary seals but alternative systems be used