Pentair 071439Z filter tank o-ring, 19-1/4 inch inside diameterPentair OEM O-Ring 19-1/4" ID (1/2" Thick), Filters Made 3/03 to 7/03, 071439Z In stock$7299
Pentair 071439Z filter tank o-ring, 19-1/4 inch inside diameter
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Pentair OEM O-Ring 19-1/4" ID (1/2" Thick), Filters Made 3/03 to 7/03, 071439Z

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$7299
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Quick overview

  • Genuine Pentair part The OEM 071439Z filter tank o-ring, not a generic substitute.
  • Date range matters This o-ring is called out for filters manufactured between 3/03 and 7/03, so the build date decides which ring you need.
  • 19-1/4 inch inside diameter Measured ID of the ring, with a 1/2 inch thickness.
  • Rubber construction Listed as a rubber o-ring for pool filter service.
  • Tank seal duty This is the seal between the filter tank halves, so it is the part that stops a band clamp leak.
  • Lubricate on assembly A silicone based 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 071439Z is the OEM filter tank o-ring measuring 19-1/4 inches on the inside diameter with a 1/2 inch thickness, in rubber. It is specified for filters manufactured between March 2003 and July 2003.

Check the build date

The date window is the whole point of this listing. Tanks that look identical from the outside can take different rings depending on when they were built, so read the manufacture date off the filter label before you order rather than measuring by eye. Getting this wrong is the usual reason a fresh o-ring still weeps at the clamp.

What it fits

It is listed for Pentair Clean and Clear Plus cartridge filters, Purex CFM fiberglass cartridge filters in models CFM 120, 180 and 315, and Purex 4000 Series molded DE filters in the SM and SMBW models 4024, 4036 and 4048.

Fitting

Clean the groove and the sealing face before the new ring goes in, and use a silicone based o-ring lubricant so the ring seats evenly instead of rolling as the clamp comes together.

Specifications
Brand Pentair
Manufacturer part number 071439Z
UPC 788379695439
Part type Pool Filter Part
Material Rubber
Inside diameter 19-1/4"
Thickness 1/2"
Manufacture date range Filters manufactured between 3/03 and 7/03
Listed for Pentair Clean and Clear Plus cartridge filters; Purex CFM fiberglass cartridge filters, models CFM 120, 180, 315; Purex 4000 Series molded DE filters, SM and SMBW models 4024, 4036, 4048
Shipping weight 0.6 lb
Ships Parcel

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Questions and answers

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

Why does the manufacture date matter?
Pentair changed the tank o-ring during this period. This ring is the one specified for filters built between 3/03 and 7/03, so check the date on your filter label before ordering.
What size is this o-ring?
19-1/4 inch inside diameter with a 1/2 inch thickness.
Which filters is it listed for?
Pentair Clean and Clear Plus cartridge filters, Purex CFM fiberglass cartridge filters in models CFM 120, 180 and 315, and Purex 4000 Series molded DE filters in SM and SMBW models 4024, 4036 and 4048.
Should I lubricate the o-ring?
Yes. A silicone based o-ring lubricant helps the ring seat evenly in the groove and keeps it from rolling or pinching when you draw the clamp down. Petroleum greases are not suitable on pool o-rings.
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