How to choose a proper sealing system for rotary shaft applications

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چکیده

Fugitive emissions are an important aspect in running a chemical or petrochemical plant. Apart from their environmental impacts, fugitive emissions are responsible for loss of medium during the production process. Due to this plant efficiency is reduced and a higher capital expenditure is required. Three common types of sealing systems are compared: compression packings, mechanical seals and magnetic couplings. The criteria used for this comparison are leakage rates under operating conditions. As additional criteria operating expense, behaviour on failure and durability will also be considered. As a result plant operators and engineers should be able to choose the proper sealing system for their particular application.

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