Pentair 152127 rubber o-ring for 18 inch diameter filter tanksPentair Genuine OEM 18" Diameter Tank O-Ring, 152127 In stock$5899
Pentair 152127 rubber o-ring for 18 inch diameter filter tanks
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Pentair Genuine OEM 18" Diameter Tank O-Ring, 152127

Ask a questionMPN 152127
$5899
In stock
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Quick overview

  • Genuine Pentair Factory part 152127, not a generic ring cut to length.
  • Sized for 18 inch tanks Made for filter tank bodies measuring 18 inches in diameter.
  • Molded rubber Rubber is the material the tank joint was designed to seal against.
  • Holds the tank closed This ring is what keeps the two halves of the tank watertight under pump pressure.
  • Cheap insurance on a teardown An o-ring takes a set once it has been compressed for a season, so most techs fit a new one whenever the tank is opened.
  • Lubricate before fitting A silicone o-ring lubricant helps the ring seat evenly and makes the next teardown easier.
Full description and specifications ↓

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Product details

Pentair 152127 is the tank o-ring for filter tanks with an 18 inch diameter body. It is the genuine Pentair part, molded in rubber.

What it does

The tank o-ring sits in the joint between the two halves of the filter body. Every bit of pressure the pump makes is trying to push that joint open, and the ring is the only thing holding water in. When it hardens, flattens or nicks, the filter starts weeping at the band and the tank will not hold pressure.

Before you order

Measure the tank body and compare the ring you pulled out. Pentair uses several tank ring sizes across its filter lines, so the 18 inch measurement is the thing to confirm rather than the model name on the label. Wipe the groove clean and use a silicone based o-ring lubricant when you fit the new ring.

Specifications
Brand Pentair
Manufacturer part number 152127
UPC 788379694012
Type Tank o-ring
Tank diameter 18 in
Material Rubber
Part type Pool filter part
Shipping weight 0.1 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?
It is the 18 in diameter tank o-ring, Pentair part number 152127.
Is this a genuine Pentair part?
Yes. It is the Pentair OEM ring, not an aftermarket substitute.
What is it made of?
Rubber, listed by Pentair as a rubber pool filter part.
Should I replace the o-ring every time I open the filter?
It is good practice. A ring that has been compressed for a season will not always reseal, and a tank that weeps at the joint is far more expensive than the ring.
Ask your own question