Pentair O-Ring, Volute Hydropump In stock$1199
Quick overview
- Genuine Pentair Factory part 352626 for the Hydropump volute.
- O-257 size The o-ring is referenced as an O-257, useful when cross checking against an old parts list.
- Hydropump 590 and 700 Listed for the Pac-Fab Hydropump 590 and 700 series.
- Seals the volute Sits between the volute and the pump body, where a failure shows as a leak or a loss of prime.
- Replace it while you are in there Any job that separates the volute is the moment to fit a new o-ring rather than reuse a set one.
- Lubricate on fitting A silicone based o-ring lubricant helps it seat and keeps it from sticking next time.
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Product details
The Pentair 352626 is the volute o-ring for Pac-Fab Hydropump pumps, referenced on older parts lists as an O-257. It is listed for the Hydropump 590 and 700 series.
Where it sits
The ring seals the volute against the pump body. That joint is on the pressure side and on the suction path, so when the ring goes hard, flattens or splits you get one of two symptoms: water weeping from the seam while the pump runs, or a pump that will not hold prime because it is drawing air past the seal.
Fitting
Clean the groove and the mating face before the new ring goes in, and use a silicone based o-ring lubricant so it seats evenly instead of rolling as the volute is drawn up. If you have the pump apart for anything else, fit a fresh ring while it is open rather than reusing one that has already taken a set.
| Brand | Pentair |
|---|---|
| Manufacturer part number | 352626 |
| UPC | 788379699543 |
| Type | Volute o-ring |
| Size reference | O-257 |
| Part type | Pool pump part |
| Fits | Pentair Pac-Fab Hydropump 590 and 700 series |
| Shipping weight | 0.05 lb |
| Ships | Parcel |
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