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What should be used to seal the multistage pump for pumping water? It should be cheap and easy to use, hehe.
1, packing seal: asbestos rope winding.

2. Mechanical seal: dynamic ring plus static ring plus O ring seal.

3. Soft packing seal: carbon fiber soft clay is wound on the shaft and injected under pressure.

Note: the packing seal is easy to wear the shaft due to extrusion, but it is convenient to replace; Mechanical seal does not hurt the shaft, but it is troublesome to replace it; Soft packing seal does not damage the shaft and is easy to maintain, but it is easy to leak when the pump is stopped.

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