Pump leaking


Well-known member
Jul 12, 2008
I have a Sta-Rite variable speed pump P6E6VS4H-209L.

it’s leaking at the band clamp. I ordered a new seal U9-228A. After living up the new seal and replacing it the leak is still there. It’s just a drip and it’s not gushing. I don’t see any cracks on the housing or seal plate. I did notice that the old seal looked to be oval shaped vs round. Not sure if it’s just compressed since the pump is 6 years old. Any suggestions?


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TFP Guide
Jul 21, 2013
Northern NJ
Pool Size
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
Try another seal. Did you use a lubricant when installing the seal?

When installing the seal parts, using a lubricant can help. However, you want something that provides only transient lubricity. You can use a seal installation lubricant such as P-80 or US Sealube or dish soap. A Hayward video suggests vegetable oil.


When installing a pump shaft seal, it is good practice to use the proper lubricant to make installing the seal easy without creating adverse conditions for the seal. Ideally, the lubricant should provide good lubricity for only a short period of time and then wash away.

If a lubricant, such as a silicone or Teflon based lubricant, is used, the seal won't be as secure as it should be during operation of the pump. This is because the seals are rotating against each other creating some level of torque.

Also, the silicone or Teflon can have an adverse effect on the seal materials over time.



Well-known member
Jul 12, 2008
I took it apart again and found a small hairline crack in the pump housing under the clamp. I just ordered a new one. Thanks for the replies.
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