How often should mechanical seals be replaced?

2025-11-06

Mechanical seal replacement frequency depends on operating conditions, seal type, and application, with no fixed universal interval.

General Replacement Guidelines

1. Based on Operating Hours
- Under ideal conditions (stable parameters, clean/compatible fluids): 10,000–20,000 operating hours (roughly 1–2 years for continuous operation).
- Under harsh conditions (high temp/pressure, abrasive/corrosive fluids, frequent start-stops): 1,000–5,000 operating hours (may need replacement every 3–6 months).
2. Based on Condition Monitoring
- Replace immediately if failure signs appear (e.g., excessive leakage, abnormal noise, elevated temperature).
- Proactively replace during scheduled equipment overhauls if seals show wear (e.g., scratched faces, degraded O-rings) even if no obvious failure.
3. Manufacturer’s Recommendations
- Prioritize the seal manufacturer’s guidelines, as they specify intervals tailored to the seal’s design, materials, and intended use.
4. Preventive Replacement
- For critical equipment (where unexpected failure causes heavy losses), replace seals before reaching their maximum service life—e.g., at 70–80% of the recommended operating hours.

Jiaxing Burgmann Mechanical Seal Co., Ltd

Email: doris@mechanicalseal.com.cn

Skype: kathysunlin

Fax: 86-573-84072317

Mob: 86-15381220188

WhatsApp: 8615958372402

Website: www.industrial-mechanicalseals.com

Add: A-5 Wanyangzhongchuangcheng, Ganyao Town, Jiashan county, Jiaxing, Zhejiang, China. 314107

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doris@mechanicalseal.com.cn

86-0573-84133388

No. 28 route de no. 28 Chengxi, le comté de Jiashan, Jiaxing, Zhejiang, Chine 314100

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