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Mechanical seal maintenance requirements and process description

Mechanical seal maintenance requirements and processes
After removing the machine seal, first check the pump body with the organic seal installed, and the following requirements must be met:
1. The maximum bending degree of the shaft is ≤0.05mm, and the axial movement of the mechanical seal type is ≤0.05mm;
2. The jump at the moving ring seal ring is ≤0.01mm;
3. The surface roughness of the shaft or sleeve of the machine sealing part is 1.6 μm, and the surface roughness of the contact with the static ring sealing surface is 3.2 μm;
4. Then repair the mechanical seal:
(1) Check the mechanical seal components. All components must be complete, non-destructive, dynamic mechanical seals, static ring seal surface without scratches, bumps and other defects, if damage is found, repair or replace the machine seal;
(2) Check if the spring force of the spring becomes smaller. If it becomes smaller, the spring must be replaced.
(3) Check the inner wall of the seal and the inner surface of the sealed end cap for damage. If problems are found, repair them in time.

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