Why is there an O-ring groove on the mechanical seal shaft sleeve of a water pump?
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Why is an O-ring also needed between the shaft and the sleeve? Can’t the sleeve just be placed directly on the shaft? Please, expert Haiyou, give me some advice
The inside of the shaft sleeve is also a medium leakage point that needs to be sealed. It is mainly sealed by O-rings or gaskets.
Are there any restrictions on the position of that groove on the shaft sleeve?
How did water get into the shaft sleeve?
It serves to create a seal! However, this “O”-ring tends to get damaged easily during installation, so we made a change: after installing the sleeve, wrapping some tape around the outside of the sleeve can also provide sealing
It serves to create a seal, preventing axial leakage.
It depends on the specific location; is the shaft sleeve between impellers? Still in a position like a mechanical seal?
It is used at the location where a balanced mechanical seal is installed; the shafts are coaxial, and if it’s not possible to modify the shafts, then a sleeve can be added to them
It leaks from the impeller lock nut; sometimes we make our own shaft sleeves and remove the O-ring inside, as it’s difficult to machine it