Why do centrifugal pumps need mechanical seals?

Centrifugal pump adopts mechanical seal-mainly because it requires more sealing performance. When the rotating equipment is running, if there is no sealing device between the pump casing and the shaft, the medium will flow out directly from there. If it is toxic and harmful, there will be safety problems. When there is no special requirement, packing seal is used here, mainly because of low cost; If the working conditions are high, it is necessary to choose mechanical seal, and the matching flushing scheme can achieve good sealing performance. At the same time, the good service life of mechanical seal can not be achieved by packing. Chongqing Water Pump Factory produces large-scale multistage self-balancing centrifugal pumps and various types of single-stage centrifugal pumps, metering pumps, reciprocating pumps, hydraulic diaphragm pumps, complete dosing assemblies, descaling systems, and pressure vessels of Class I, II and III.