1,500 Seal Failures: 19 Things 36 Years Taught Me

Most seal failures are not product failures. They are specification failures, decided long before the seal ever runs.

After 36 years investigating mechanical seal failures across process plants, the same five root causes appear again and again. Here are 19 things 1,500 failures taught me.

19 Things 36 Years of Seal Failures Taught Me

1. The seal is rarely the root cause. It is the messenger.

2. Most leaks were decided before the seal was even fitted.

3. If nobody checked compatibility, the datasheet is a guess.

4. Face material and elastomer both matter. Most people check one.

5. "It's always been fine" is not a spec.

6. A cheap seal that fails in 3 months costs more than the right one.

7. Vibration kills more seals than chemistry does.

8. If your pump alignment is off, no seal will save you.

9. The best engineers ask questions before they order, not after they leak.

10. A shutdown is expensive. A planned changeover is not.

11. Purchasing is not the problem. A missing spec conversation is.

12. FFKM is not overkill if the chemical attacks anything else.

13. Independent advice costs nothing if you never place an order.

14. Every "mystery failure" has a cause. You just have not found it yet.

15. A seal that worked for 20 years still needs reviewing when the process changes.

16. Documentation beats memory every single time.

17. 30 minutes with someone who has seen it before saves weeks of guessing.

18. Most seal problems are solved with a phone call, not a redesign.

19. If it is leaking, it is telling you something. Listen before you replace it.

1,500 failures. Same five causes. Still worth the call every time.

Got one that is stumping you? Send me the symptoms.

Andrew Sykes MCGI
36 Years Solving Seal Problems | Acumen Seals & Pumps Limited
📞 Call: 07767 842601
📩 Email: office@acumenseals.co.uk
🌐 Visit: acumenseals.co.uk

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