How often should mechanical seals be replaced?

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