Sta-Rite Housing O-Ring 9"x9-1/2"x.275 In stock$1055
Quick overview
- Genuine Sta-Rite Factory part U9-389, sized to the housing it seals.
- Stated size 9" x 9-1/2" x .275, so it can be checked against the ring you are pulling out.
- PLBC booster pump Listed as the housing O-Ring for the Sta-Rite PLBC booster pump, PLBC-178L.
- Stops housing leaks A flattened or cracked housing O-Ring is the usual reason a booster pump weeps at the seam.
- Change it with the housing open Whenever the pump is apart for a seal or impeller job, this ring is the one to renew while you are in there.
- Seat it dry and clean Wipe the groove out before fitting so the ring sits flat and the halves pull up square.
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Product details
The Sta-Rite U9-389 is the housing O-Ring for the PLBC booster pump, measuring 9" x 9-1/2" x .275. It is the seal that sits between the two housing halves and keeps the pump from leaking at the seam.
Why it fails
A booster pump O-Ring lives between heat, pressure and chlorinated water. Over a few seasons it takes a permanent set, loses its round section and stops springing back against the groove. The first sign is usually a slow weep at the housing joint that turns into a steady drip, and the pump can start losing prime once air gets past the same gap.
Fitting
Clean the groove and the mating face before the new ring goes in, so it lies flat all the way round with nothing trapped under it. Pull the housing bolts up evenly rather than tightening one side at a time, which is what pinches a fresh ring and puts you back where you started.
| Brand | Sta-Rite |
|---|---|
| Manufacturer part number | U9-389 |
| UPC | 788379785550 |
| Type | Housing O-Ring |
| Size | 9"x9-1/2"x.275 |
| Fits | Sta-Rite PLBC booster pump, PLBC-178L |
| Shipping weight | 0.25 lb |
| Ships | Parcel |
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