Pentair WhisperFlo WFE Diffuser O-Ring In stock$626
Quick overview
- Genuine Pentair Factory o-ring 355227Z, sized for the WhisperFlo diffuser.
- WhisperFlo WF and WFE The o-ring used on the WF and WFE model pumps.
- Seals the diffuser Closes the path between the diffuser and the volute so water leaving the impeller has only one way to go.
- Cheap insurance A flattened o-ring costs flow quietly, and the part itself is one of the least expensive in the pump.
- Change it while you are in there Any time the pump is opened for a seal or an impeller, this is the o-ring worth replacing.
- Use silicone lubricant O-ring lubricant made for pool equipment helps it seat and makes the next teardown easier.
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Product details
The Pentair 355227Z is the diffuser o-ring for WhisperFlo pumps in the WF and WFE range. It seals the diffuser against the volute so that water leaving the impeller has only one way to go.
Why a small o-ring matters
When this o-ring flattens, hardens or splits, water short circuits back around the diffuser rather than passing through it. The pump keeps running, the motor sounds exactly as it always has, and the only symptom is less water at the returns. That is easy to blame on a dirty filter, a clogged basket, or a tired impeller, which is why a worn diffuser o-ring can go unfound for a season.
Fitting
Wipe the groove clean of grit before seating the new ring, and use a thin film of an o-ring lubricant intended for pool equipment. That helps it seat evenly and keeps it from tearing or sticking the next time the pump is opened.
Since reaching the diffuser means opening the pump anyway, it is worth ordering the seal kit or a spare seal plate gasket at the same time.
| Brand | Pentair |
|---|---|
| Manufacturer part number | 355227Z |
| UPC | 788379720575 |
| Type | Diffuser o-ring |
| Part type | Pool pump part |
| Fits | Pentair WhisperFlo WF and WFE series pumps |
| Shipping weight | 0.02 lb |
| Ships | Parcel |
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