Product Catalog
Mechanical Seal Repair and Manufacturing
Repair, equivalent sourcing or custom manufacturing for pump shaft seals.
Components and what to check
A mechanical seal is a working group, not a single part.
| Component | Function | When worn |
|---|---|---|
| Stationary seat | Fixed sealing face | Surface wear → leak |
| Rotating face | Counter-face rotating with shaft | Flatness lost → dripping |
| Spring | Presses the two faces together | Fatigue → less contact pressure |
| Elastomer parts | Secondary sealing (o-ring, bellows) | Hardens/cracks → body leak |
Frequently asked questions
Fluid is leaking from my pump shaft — is it the mechanical seal?
In most rotating-shaft pumps, leakage around the shaft is caused by the mechanical seal, though bearing wear and misalignment can look similar. Send photos of the pump and the leak for an initial read.
Should the seal be repaired or replaced?
If face damage is limited and springs/elastomers are intact, repair is usually economical. If faces are deeply damaged or the housing is deformed, replacement is recommended. We'll present both options clearly.
The seal's brand is unknown — can you still help?
Yes. Send us the seal and we identify it from its dimensions, then offer repair, equivalent sourcing, or custom manufacturing.
A newly installed seal leaked immediately — why?
Three classic causes: incorrect installation dimension, faces contaminated or scratched during assembly, or dry running. Seal faces are precision-lapped — even a fingerprint can leave a mark on first startup.