What Alternatives Exist to Mercury Seals for High RPM Generators?

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Alternatives to mercury seals for high RPM generators include carbon seals and magnetic oil rotary shaft seals, which are suitable for vacuum applications. For electrical connections to the rotating shaft, mercury-wetted slip rings from Mercotac are recommended. FLOWSERVE's Byron-Jackson Type H motors utilize mercury seals for deep water well applications, suggesting they may have relevant insights. It is advisable to contact FLOWSERVE for further information on their sealing solutions. Exploring these options can help establish effective rotor-stator contact in high RPM generator designs.
kumar_raj78
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Hi,

While designing a high RPM generator i need some information on mercury seal. Actually i want to establish contact between rotor(25k to 30k RPM) and stator. Anybody can suggest me any other alternatives.
 
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I can't say I have ever heard of a mercury seal. How about some kind of carbon seal?
 
If you want to seal the rotating shaft (eg passing into a vacuum) you can use magnetic oil rotary shaft seals, all the usual vacuum system makers sell them.

If you mean to pass electrical connections to the shaft, mercotac make mercury wetted slip rings.
 
Submersible Motor Seal

FLOWSERVE uses a mercury seal in its Byron-Jackson Type H motors. The motor is for deep water well applications. You may want to contact FLOWSERVE for more information.
 

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