
Quick overview
- Genuine Pentair part The factory tank o-ring, part number 071442Z.
- Sized for 18 inch tanks Fits the 18 inch filter tank, so measure before you order.
- Stated size 18 in x 9/16 in Pentair gives the o-ring as 18 inches by 9/16 inch.
- Seals the tank halves This is the seal between the upper and lower tank sections.
- Replace on every teardown An o-ring that has been compressed for a season rarely reseals as well the second time.
- Filter part Listed with Pentair PacFab Nautilus Plus DE filter parts.
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Product details
The Pentair 071442Z is the filter tank o-ring for 18 inch tanks. Pentair gives the ring as 18 inches by 9/16 inch, and it is listed with the PacFab Nautilus Plus DE filter parts.
What it does
The tank o-ring sits between the upper and lower halves of the filter body and is what the band clamp squeezes to make the tank watertight. It is the only thing holding back full system pressure at that joint, so a flat, nicked or hardened ring shows up quickly as a drip or a spray around the seam.
When to change it
Any time the tank is opened for a grid or cartridge service, put a new o-ring in on reassembly. A ring that has been compressed for a season has taken the shape of the groove and will not seal the same way twice. Measure your tank first, because this one is the 18 inch size.
| Brand | Pentair |
|---|---|
| Manufacturer part number | 071442Z |
| UPC | 788379803162 |
| Type | Filter tank o-ring |
| Fits | 18 in tank |
| Size | 18 in x 9/16 in |
| Listed under | Pentair PacFab Nautilus Plus DE filter parts |
| Shipping weight | 0.65 lb |
| Ships | Parcel |
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