O-ring, Filter Tank 18-5/16" ID, 9/16" - P24225 O-86



Part # 4672-07

By Armco

  4.84 Average  



Part # 4672-07

Manufacturer Code P24225

Dimensions 18-5/16" ID, 9/16"

Alternate Part #'s 071442, 28828687, 47021449, 71442, O-86, O86, P24225

Product Description

O-ring, Filter Tank 18-5/16" ID, 9/16" - P24225


?     Asked on 1/18/2020 by Gene jackson

I have an old CF 180 POOL FILTER i need the rubber gasket for the lid, it says made by PUREX 2133695681

A  Answered on 1/22/2020 by InyoPools Product Specialist Lennox H.

Hi, Gene. This Tank O-ring will fit an old CF-180 cartridge filter. 

?     Asked on 7/6/2019 by charles sanford lahti

I have a NS-48 fiter and looking for an o-ring that fits tis size tank(18 inches),

A  Answered on 7/6/2019 by InyoPools Product Specialist Lennox H.

Hi, Charles. The Tank O-ring - 152127 (OEM) or PF15-2127 (Generic) is the correct replacement. 

?     Asked on 6/4/2019 by joe

Please call me about the backwash oring and filter oring.

A  Answered on 6/4/2019 by InyoPools Product Specialist Michelle B.

Hello, Please call us at 407-834-2200 during our normal business hours to speak to one of our techs about technical support.

?     Asked on 5/28/2019 by Brian

I'm not sure if I need one or not, but I am not able to get the top of this filter around the o-ring. I've used silicone spray and brute force, and vice grips. Is there a trick to this, or is my current just old and in need of replacement as a result of it being stretched out now or swollen? I have the Pentair NSP 36 Model. And the o-ring has no cracks or cuts. Thanks in advance,

A  Answered on 5/29/2019 by InyoPools Product Specialist Steve M.

Hi Brian, What you are experiencing is a common sign that the o-ring has become over worn and needs replacing. This is the proper replacement O-Ring for the Pentair NSP36

A  Answered on 7/14/2019 by Product Owner

There is an excellent youtube video of a guy working on a Pentair SMBW 2000 DE filter where he takes the clamp ring off and removes the lid by turning on the pump. To replace the lid he filled the tank about half full and shut off the pump with the lid setting on the o-ring and the suction created pulls the lid down on the o-ring. That is how I do it now after struggling with this problem for 15 years.

?     Asked on 5/22/2019 by Andrea

I have a Pentair Nautilus 72 stainless steel DE filter and need to replace the o-ring. Will part #P24225 work on my filter?

A  Answered on 5/22/2019 by InyoPools Product Specialist Patrick P.

Hi Andrea, We are showing you will need the PF-15-2127 O-ring and not the O-ring listed on this page.

?     Asked on 5/19/2019 by Jim

Hello, I have an old Purex CFW 100 filter. Will this o-ring fit? Thank you!

A  Answered on 5/20/2019 by InyoPools Product Specialist Patrick P.

Hi Jim, Yes this is the proper replacement O-ring for the Purex CFW 100 filte

?     Asked on 9/14/2018 by Don

Will this o-ring fit my Flow Master model 57025800 (or it could be 600 as number is faded on lid label). Installed by Anthony Sylvan Pools 1997.

A  Answered on 9/14/2018 by InyoPools Product Specialist Lennox H.

Hi, Don. Yes, this Tank O-ring - P24225 will fit the Flowmaster filter model 57025800.

?     Asked on 7/12/2018 by dave bunel

will this fit NSP60

A  Answered on 7/12/2018 by InyoPools Product Specialist Hector F.

Yes, this o-ring will fit your model NSP60 filter. 

?     Asked on 6/10/2018 by Dianna

I have a Pac Fab DE Filter 72 sq. ft. Model # NS-72 Serial # 0785-1575 I need to replace the O Ring that fits around the tank (The big One). Can you please advise me as to which is the right one to order. Thankyou

A  Answered on 6/11/2018 by InyoPools Product Specialist Hector F.

The part number for that o ring is 4600-2127

?     Asked on 5/27/2018 by

I am looking for a o-ring for a Purex CFW 405 series tank. This is a stainless steel tank and everyone wants to sell me that big thick 9/16" o-ring with a red stripe and it is too thick. Can you help in any way?

A  Answered on 5/27/2018 by InyoPools Product Specialist Lennox H.

Hi. We're showing the same Tank O-ring - P24225 as being the replacement for your model filter. There is no alternate replacement. Make sure that you're lubricating and installing the o-ring correctly. 

?     Asked on 5/27/2017 by

Does part number: 4672-07 (O-ring) fit a Nautilus stainless steel cartridge filter? Tank diameter is 17 3/4 (inside wall to inside wall) Nautilus model- NSS-48. Please advise as soon as possible.

A  Answered on 5/27/2017 by InyoPools Product Specialist Patrick P.

This O-ring does not fit the Nautilus Stainless Steel, however we do carry parts for that filter. Here you may view the Parts for Nautilus Stainless Steel Filter.

?     Asked on 4/6/2016 by chris

O-ring, Filter Tank (p24225) is this what I have been sold before as "red stripe"? It always feels like a sloppy fit. This is for my Purex 2000 series DE stainless

A  Answered on 4/6/2016 by InyoPools Product Specialist Alan M.

Hello Chris, This is the replacement o-ring for the Purex 2000 series DE stainless filter.

?     Asked on 2/13/2015 by

What are the dimensions of the large o-ring?

A  Answered on 2/13/2015 by InyoPools Product Specialist Robert M.

The inside diameter is 18-5/16" and the o-ring cross section is 9/16".


Est. Repair Time

Less than 1 hr

Tools Needed

Screwdriver, Pliers

My old o-ring expanded where I could put my filter tank cover back on

Written on 8/26/2018 by Guest

I purchased the new o-Ring which seated tighter to the tank.

My tip for anyone putting the tank cover back on aside from being liberal with grease on the ring is to have 3 points of contact to get the cover to close and seal. I used two channel locks and a c-clamp which made it much easier to close

Were these instructions helpful? 


Review Summary

 (Average 4.84  out of 5 stars)
6 Rating
5 star:
4 star:
3 star:
2 star:
1 star:

The Most Helpful Review

The Most Recent Reviews