Analytical advantages of spiral seal

Advantage
1, spiral seal is a contactless releasable cable tie Lane, and allows a greater sealing gap, the solid-phase friction does not occur, the working life of up to several years, and easy maintenance.
2, the spiral sealing a "dynamic seal", which relies on the establishment sealed shaft power consumption state. Shaft sealing portion of the power to overcome the friction within the gap, and the other part of the direct pressure head for generating a centrifugal pumping, thus only medium shade leak.
3, screw seal for gas medium conditions. Because spiral gap can be filled with viscous fluid into liquid gas phase conditions.
4, the screw seal for low pressure working conditions (pressure less than 1 ~ 2MPa). Then a small amount of gas media leaks, cable sealing liquid (ie viscous liquid) can achieve zero leakage. Without sealing liquid cooling, simple structure.
5, in addition to as centrifugal pumps and screw sealing pressure centrifugal compressor shaft seals can also be used as a dust seal.