What is the principle of mechanical seal

      Mechanical seal is a shaft seal device that relies on one or several pairs of end faces that slide relatively perpendicular to the shaft to maintain fit under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and are equipped with auxiliary seals to achieve leakage prevention.

     The commonly used mechanical seal structure consists of a stationary ring (static ring), a rotating ring (moving ring), an elastic element spring seat, a push ring, a set screw, a rotating ring auxiliary sealing ring and a stationary ring auxiliary sealing ring, etc., with an anti-rotation pin fixed on the gland to prevent the stationary ring from rotating.

      Rotating rings and stationary rings are often also called compensating rings or non-compensating rings depending on whether they have axial compensation capabilities.