Correct operation and service life of pump mechanical seals are critical. In general, the following precautions apply to the correct use of most mechanical seals.

Most mechanical seals for pumps are designed to work in liquid environments, so the sealing faces must be immersed in the liquid before the equipment is started. Dry running will seriously damage the sealing surface and affect the service life of the pump mechanical seal. Of course, start the equipment to confirm that the motor rotation will not break the seal, but the mechanical seal for the pump of the equipment running at full speed must work in the liquid.

The piping system connected to the equipment must also be cleaned. If the debris in the system is not cleaned up in time, the debris may enter the seal after the long-term operation, thereby affecting the service life of the mechanical seal. Premature failure of seals in new equipment is likely due to this. Therefore, before starting a new device, a filter must be set at the entrance.

Turn on the cooling or flushing system, whether the equipment is running or not, it is best not to cut off the cooling or flushing system, especially when the equipment is delivering hot media or the media may crystallize after cooling.

1. Before installing the pump mechanical seal, the shaft sleeve (shaft), sealing cavity, gland and mechanical seal itself must be cleaned to prevent any impurities from entering the sealing point.

2. When assembling, it is strictly forbidden to knock, not to scratch or bruise the sealing surface, and to install according to the order. When installing the dynamic and static rings, oil or yellow dry oil should be used to coat the surface (friction pair) with an oil film to prevent direct wear on the end face caused by high-speed operation after the equipment is started, and play a role in protecting the friction pair.

3. When installing the compensation device, it is necessary to push it by hand to check its floating performance. The floating performance is poor, and the end face matching is not ideal. The key is to choose the interference amount of the sealing ring.

4. Before starting the pump shaft, check the operation of the pump shaft and the mechanical seal. Everything can be used normally; Select a different cooling medium) to start the pump. Otherwise, the mechanical seal will not be cooled by coolant after starting, and the dry friction will generate heat, which will quickly burn out the friction pair, and other parts will also be damaged after long-term operation.

5. Always check the operation of the pump, including the operation of the pump and the motor, and regularly add lubricating oil to maintain the bearings to ensure the normal operation of the mechanical seal.

6. When the pump transports special media or works under special working conditions, corresponding measures (such as blocking, flushing, cooling, filtering, etc.) must be taken. For specific measures, refer to "Mechanical Seal Auxiliary System and Application Specifications".

7. For the pump with intermittent use and the medium containing more impurities, pay attention to flushing after the pump is stopped to avoid the crystallization of the mechanical seal. For the medium with strong corrosive energy, it must be flushed after the pump is stopped to prevent corrosion.

The above are the precautions for the use of mechanical seals for pumps, I hope to help you. Akman Seals sells various types of mechanical seals, including pump mechanical seals. If you are interested in mechanical seals, you can follow our website.