Mechanical seal is made up of two pieces of sealing elements (static ring and ring) is perpendicular to the surface of the shaft, smooth and straight fit each other, and the relative rotation of sealing device.It is by the pressure of sealing medium in the rotary dynamic cyclization static ring contact surface (face) to produce appropriate clamping force, make the two ends together, maintain between end face a very thin layer of liquid membrane and reach the purpose of sealing.This layer of liquid membrane with fluid dynamic pressure and static pressure, lubrication and balance role.

Mechanical seal cleaning and inspection chad

1) Inside the working principle of mechanical seal requirements without any impurities.Thoroughly cleaning before assembling mechanical seal ring and static ring, shaft sleeve, etc.

2) Check whether there is a dynamic and static ring surface defects such as scratch, crack, these flaws will cause serious leakage of mechanical seal.Conditional can use a special tool to check the sealing face whether level off, sealing surface uneven, pressure water will enter the assembly of mechanical seal ring sealing surface activity, separate of dynamic and static ring, mechanical seal failure.When necessary, can make tooling hydrostatic test before assembly.

3) Check the action whether defects affect the seal ring.Such as dynamic and static ring seat with dynamic and static ring sealing ring surface is flawed.

4) Check if compensation spring mechanical seals damage and deformation, if stubborn coefficient change.

5) Check the sealing sleeve defects such as the existence of burr, the trench.

6) Clean the check all gasket exists defects such as cracks, porosity, measurement of synthetic diameter is within tolerance.

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