The introduction of strict norms regarding the emission of harmful substances to the natural environment imposes stringent requirement on the engineers desning sealing units.
As emphasized by scholars who deal with non-contacting face seals ,such seals are the crucial element of machines and devices in which they were uses.
It should also be observed that such seals are used in practically all branches of industry and they operate in completely different operating and environmental conditions.
Non-contacting face seals are widely used in rotor machines, among others in compressors and high-speed pumps.
they play a significant role consisting in separating the sealed mediums from the external environment.
Main functions of seals include:ensuring maximum tightness regardless of the changing external condition.
However,it turns out that it is extremely difficult to fulfill that task and in extreme cases - it is almost impossible.
In case of non-contacting gas face seals,the methods which allow maintaining a stable layer of the medium separating the working rings include adjusting the height of the radial clearance