The Ultimate Guide to Mechanical Seal Maintenance: Maximise Reliability and Extend Seal Life

Proper maintenance of mechanical seals is essential for ensuring the reliability and efficiency of pumps and rotating equipment. Reliability Engineering Industries provides expert insight into how regular maintenance can prevent costly downtime and extend the lifespan of seals. A well-maintained seal not only safeguards equipment but also reduces operational costs over time.

‍

Step-by-Step Mechanical Seal Maintenance Checklist

1. Visual Inspection
   • Check for signs of leakage around the seal housing.
   • Look for wear or scoring on the seal faces.
   • Inspect the shaft sleeve or shaft for damage.
2. Seal Environment Check
   • Verify that the seal chamber is clean and free of debris.
   • Ensure that any cooling or flushing systems are functioning properly.
3. Alignment and Balance
   • Confirm that the pump and motor alignment is correct.
   • Inspect for signs of vibration or imbalance, which can damage seals.
4. Seal Face Condition
   • Examine seal faces for flatness and surface condition.
   • Replace or re-lap faces showing excessive wear or damage.
5. Elastomer Inspection
   • Check O-rings, gaskets, and other elastomer components for hardening, swelling, or cracking.
   • Replace worn or damaged elastomers immediately.
6. Lubrication
   • Ensure proper lubrication of the seal faces if applicable.
   • Verify lubricant quality and top-up or replace as needed.
7. Pressure and Temperature Checks
   • Monitor operating pressure and temperature against design limits.
   • Adjust process conditions if they exceed seal specifications.
8. Documentation
   • Record maintenance findings and any actions taken.
   • Schedule regular inspections based on operational demands.

Reliability Engineering Industries recommends incorporating this checklist into routine maintenance schedules to identify potential issues early and maintain optimal seal performance.

‍

Signs Your Mechanical Seal Needs Replacement

• Persistent Leakage: Continuous or excessive leakage around the seal may indicate worn faces, failed elastomers, or improper installation.
• Visible Damage: Cracks, chips, or scoring on seal faces or components are clear signs that replacement is needed.
• High Operating Temperatures: Unusually high temperatures may signal poor lubrication, friction, or misalignment, leading to seal failure.
• Vibration and Noise: Increased vibration or unusual noise from the pump can stress the seal and point to internal wear.
• Frequent Adjustments: If the seal requires constant adjustments or re-tensioning, it may be nearing the end of its service life.

Reliability Engineering Industries advises prompt replacement when these signs are present to avoid equipment failure and maintain operational efficiency.

‍

Best Practices for Extending Seal Life

• Correct Installation
  • Ensure seals are installed according to manufacturer guidelines.
  • Use proper tools and follow torque specifications to prevent damage.
• Maintain Cleanliness
  • Keep seal environments clean during installation and operation.
  • Filter process fluids to prevent contamination.
• Monitor Operating Conditions
  • Regularly monitor pressure, temperature, and flow rates.
  • Operate within the seal’s design parameters to avoid premature wear.
• Use Quality Seal Support Systems
  • Implement seal flush plans or barrier systems where required.
  • Maintain support systems to ensure they function correctly.
• Training and Skill Development
  • Provide training for maintenance staff on seal handling and care.
  • Work with experienced professionals, like those at Reliability Engineering Industries, for technical support.

By following these practices, plant operators can significantly extend the lifespan of their mechanical seals, ensuring smoother operations and reduced maintenance costs.

‍

Expert Support from Reliability Engineering Industries

At Reliability Engineering Industries, we offer not only high-performance sealing solutions but also expert advice on seal maintenance and system optimisation. Our experienced engineers work closely with clients to ensure that their seals deliver maximum reliability and efficiency throughout their service life.

Regular maintenance, paired with the right support, can transform your sealing systems into a reliable asset rather than a maintenance concern.

‍

Contact Reliability Engineering Industries Today

Need help with mechanical seal maintenance or replacements? Contact Reliability Engineering Industries for expert support, high-quality sealing solutions, and tailored advice to keep your equipment running at its best.