Pentair 39010200Z filter tank o-ring, 20-7/8 in. ID, 7/16 in. thickPentair OEM Tank O-Ring 20-7/8" ID (7/16" Thick), 39010200Z In stock$6299
Pentair 39010200Z filter tank o-ring, 20-7/8 in. ID, 7/16 in. thick
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Pentair OEM Tank O-Ring 20-7/8" ID (7/16" Thick), 39010200Z

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$6299
In stock
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Quick overview

  • Genuine Pentair the OEM tank o-ring, part 39010200Z, not a generic.
  • 20-7/8 in. ID measured across the inside; the cord cross section is 7/16 in.
  • Three filter families Clean and Clear Plus cartridge filters, Nautilus FNS Plus DE filters and the American Products RPM filters, Titan RPM DE and Quantum RPM cartridge.
  • Seals the tank it sits in the joint between the tank halves and is the only thing keeping that seam dry.
  • Replace when you see weeping a tank that drips at the seam after a cleaning usually just needs a fresh o-ring.
  • Ships parcel a single o-ring in a small package.
Full description and specifications ↓

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Product details

The Pentair 39010200Z is the genuine tank o-ring for the Clean and Clear Plus cartridge filters, the Nautilus FNS Plus DE filters and the American Products RPM filters, both the Titan RPM DE and the Quantum RPM cartridge. It measures 20-7/8 in. across the inside with a 7/16 in. cross section.

What it does

The o-ring sits in the joint between the two tank halves under the clamp. Every time the tank is opened to clean cartridges or grids, that seal is disturbed, and an o-ring that has flattened, cracked or stretched will weep at the seam once the system is back under pressure.

Before you order

Measure the old ring if you can: 20-7/8 in. inside diameter and 7/16 in. thick. This is the OEM Pentair part; a generic in the same size is also available if you would rather not pay for the name.

Specifications
Brand Pentair
Manufacturer part number 39010200Z
UPC 788379693299
Inside diameter 20-7/8 in.
Cross section 7/16 in.
Fits Pentair Clean and Clear Plus cartridge, Nautilus FNS Plus DE, and RPM filters
Part type Pool filter part
Shipping weight 0.45 lb
Ships Parcel

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Questions and answers

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

Which filters use this o-ring?
Pentair Clean and Clear Plus cartridge filters, Nautilus FNS Plus DE filters and the RPM filters, meaning the Titan RPM DE and Quantum RPM cartridge models.
How do I check the size?
Lay the old o-ring flat and measure the inside diameter: this one is 20-7/8 in. The cord thickness is 7/16 in.
Is this the genuine part or a generic?
Genuine Pentair, part number 39010200Z. A generic in the same size is sold separately.
Does it come with the clamp?
No. This is the o-ring only.
Ask your own question