Pentair 350336Z diffuser o-ring for WhisperFlo XF and IntelliFlo XF pumpsPentair WhisperFlo XF / IntelliFlo XF Diffuser O-Ring #2-336, 350336Z In stock$799
Pentair 350336Z diffuser o-ring for WhisperFlo XF and IntelliFlo XF pumps
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Pentair WhisperFlo XF / IntelliFlo XF Diffuser O-Ring #2-336, 350336Z

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$799
In stock
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Quick overview

  • Genuine Pentair Factory part number 350336Z, not a generic ring cut to fit.
  • Size 2-336 The standard dash size, so you can check it against the ring you pulled out.
  • WhisperFlo XF and IntelliFlo XF The same diffuser o-ring serves both variable speed pump families.
  • Diffuser seal It seals the pump diffuser, so it comes out any time the pump is opened for impeller work.
  • Cheap insurance A ring that has hardened or taken a set lets water bypass the diffuser and costs the pump flow.
  • Buy the pair The seal plate o-ring on these pumps is a separate part, worth changing while the pump is apart.
Full description and specifications ↓

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Product details

The Pentair 350336Z is the diffuser o-ring for the WhisperFlo XF and IntelliFlo XF variable speed pumps. It is a size 2-336 ring, supplied as the genuine Pentair part.

Where it goes

The ring seals the diffuser inside the pump. It has to come off any time the pump is opened, which usually means an impeller change, a shaft seal job or a strip down after the pump has run dry. Rubber that has been heat cycled for years hardens and takes a permanent set, and once that happens it no longer seals against the mating face, so water bypasses the diffuser instead of being pushed through it.

It is a low cost part in the middle of a job that is not worth doing twice, so it is normally replaced on sight rather than inspected. The seal plate o-ring on these pumps is a separate Pentair part and is worth ordering at the same time.

Specifications
Brand Pentair
Manufacturer part number 350336Z
UPC 788379807597
Type Diffuser o-ring
O-ring size 2-336
Fits Pentair WhisperFlo XF and IntelliFlo XF variable speed pumps
Shipping weight 0.05 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

What size o-ring is this?
A 2-336, which is the size Pentair specifies for the WhisperFlo XF and IntelliFlo XF diffuser.
Does it fit the IntelliFlo XF as well as the WhisperFlo XF?
Yes. Pentair lists 350336Z as the diffuser o-ring for both pumps.
Is this the seal plate o-ring?
No. The seal plate o-ring is a separate Pentair part, so check which one you are short of before ordering.
When should I replace it?
Any time the pump is opened. Once the ring has gone hard or taken a permanent set it no longer seals the diffuser properly.
Ask your own question