The core signs of mechanical seal failure are visible leaks and abnormal equipment performance.
Key Failure Signs
1. Leakage
- Obvious dripping or streaming of fluid from the seal area (exceeds the normal acceptable rate, usually >5 droplets per minute).
- Accumulation of fluid or stains around the seal and adjacent components.
2. Abnormal Sounds/Vibrations
- Unusual grinding, squealing, or rattling noises from the seal region, indicating worn or misaligned seal faces.
- Increased equipment vibration, often caused by seal damage leading to unstable operation.
3. Elevated Temperature
- Higher-than-normal temperature at the seal housing, resulting from insufficient lubrication, dry running, or excessive friction between seal faces.
4. Reduced Equipment Efficiency
- Drop in pump pressure, flow rate, or compressor output, as seal leakage affects system performance.
- Increased energy consumption due to the seal’s increased resistance.
5. Visual Damage
- Visible wear, scratches, or cracks on the seal faces when inspected after disassembly.
- Deterioration (swelling, hardening, or tearing) of elastomeric components like O-rings or gaskets.
