Pentair 351446 WhisperFlo XF seal plate o-ringPentair WhisperFlo XF Seal Plate O-Ring, 351446 In stock$1299
Pentair 351446 WhisperFlo XF seal plate o-ring
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Pentair WhisperFlo XF Seal Plate O-Ring, 351446

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$1299
In stock
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Quick overview

  • Genuine Pentair Factory o-ring, part number 351446.
  • WhisperFlo XF specific Sized for the seal plate on the WhisperFlo XF pump, not a generic ring.
  • Seals the wet end Sits between the seal plate and the volute where the pump body clamps together.
  • Stops a pad leak A flattened or cracked o-ring here shows up as water running from the seam of the pump body.
  • Replace when you open the pump Cheap insurance any time the seal plate comes off for an impeller or shaft seal job.
  • Direct replacement Same dimensions and material as the ring fitted at the factory.
Full description and specifications ↓

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Product details

Pentair 351446 is the genuine seal plate o-ring for the WhisperFlo XF pump. It seals the joint where the seal plate meets the volute, which is the seam that opens up whenever the wet end is split for service.

What a failed ring looks like

Water running from the middle of the pump body, between the motor end and the strainer housing, is the classic sign. Heat, chlorine and age harden the rubber until it takes a permanent set and no longer springs back against the sealing face, and once that happens the leak will not tighten out.

Fit a new one every time

An o-ring that has been compressed for a season or two should not go back in. If you are already inside the pump for a shaft seal, an impeller or a diffuser, replace this ring while it is exposed. It is the least expensive part of the job and the most likely to cause a callback if it is reused.

Specifications
Brand Pentair
Manufacturer part number 351446
UPC 788379807580
Type Seal plate o-ring
Fits Pentair WhisperFlo XF pump
Location Between the seal plate and the volute
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.

Where does this o-ring go?
It seals the joint between the seal plate and the volute on a WhisperFlo XF pump, so it is the ring you expose when you split the wet end.
Is this a genuine Pentair part?
Yes. It is the OEM o-ring, Pentair number 351446.
Why is my pump leaking from the middle of the housing?
Water from the seam where the motor end meets the volute usually means the seal plate o-ring has hardened, flattened or split. Replacing it is the normal fix.
Should I replace it during other repairs?
Yes. Any time the seal plate comes off for a shaft seal or an impeller, fit a new o-ring rather than reusing one that has taken a set.
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