The sealing device is mainly used to prevent the leakage of fluid when the pressure increases. There are many types of sealing devices, the most used are packing seals and mechanical seals.

Packing seal is used to seal the shaft with a certain pressure pressure. The packing will be damaged after use for a period of time, so regular inspection and replacement will be required. Small leaks in this type of seal are normal and beneficial.

Mechanical seals have two rigid and smooth surfaces, one static and one rotation. This sealing device can meet very good sealing requirements.