The mechanical seal is a shaft sealing device that relies on a pair or several pairs of end faces that are perpendicular to the shaft for relative sliding under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism, and is equipped with an auxiliary seal to achieve leakage prevention.
Common mechanical seal structure is composed of stationary ring (static ring), rotating ring (moving ring), spring seat of elastic element, set screw, auxiliary sealing ring of rotating ring and auxiliary sealing ring of stationary ring, etc. The anti-rotation pin is fixed on the gland To prevent the stationary ring from rotating.
Rotating rings and stationary rings can often be called compensation rings or non-compensation rings depending on whether they have axial compensation capabilities.
