How often should sand mill seals be replaced?

1. Regular Replacement Cycle
‌1. Laboratory Nano Sand Mills‌
When using fluororubber or ceramic-coated seals, it is recommended to inspect them every 6-12 months. Cracks or deformation require immediate replacement. High-pressure, high-speed operating conditions require a shorter inspection cycle of 3-6 months.
‌2. Industrial Sand Mills‌
Under normal operating conditions, it is recommended to inspect them every 6 months and replace them if they are severely worn (e.g., leakage > 5 drops/minute). Replacement is mandatory after 2000 hours of continuous operation.
‌2. Abnormal Signs Requiring Immediate Replacement
‌1. Physical Damage‌
Cracks, deformation, or hardening of the seal surface; Indentations or localized wear on the seal surface.
‌2. Performance Degradation Equipment pressure fluctuations or steam leaks (a hissing sound can be heard during operation)

Decreased grinding efficiency accompanied by material leakage from the seals

III. Key Measures to Extend Lifespan

1. Maintenance Optimization

Clean the seals weekly to prevent dirt accumulation

Control the grinding temperature (recommended: <60°C) to reduce thermal expansion damage

2. Installation Specifications

Use original seals and ensure matching dimensions

Apply even pressure during installation to avoid twisting and deformation

IV. Special Scenarios

Highly Corrosive Materials: Replace with polytetrafluoroethylene (PTFE) seals, reducing cycle time by 50%

Winter Shutdown: Apply antifreeze grease to protect the seals