?     Asked on 3/15/2015by Robert Thomas

Oops--wrong model no. on previous o-ring question. Pac-Fab Nautilus NSS-48 is correct model number. Sorry.
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A  Answered on 3/16/2015 by InyoPools Product Specialist Robert M.

Hello Robert - This o-ring will fit the Pac-Fab Nautilus NS-48. We could not find a a filter model NSS-48.
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?     Asked on 4/8/2015by joe

Is this o-ring a wedge type ? My original is wider on one side and more narrow in the other....does that make sense??
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A  Answered on 4/9/2015 by InyoPools Product Specialist Robert M.

Hello Joe - This o-ring has a round cross section. This replacement o-ring will work on the stainless steel Pac Fab Nautilus D.E., Sea Horse Cartridge, and 18" PF Sand Filter.
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?     Asked on 5/25/2015by Steve

will this work on PF-50
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A  Answered on 5/25/2015 by InyoPools Product Specialist Lennox H.

Steve, For PF-50 Sand filter you'll need the 22" Tank O-Ring (PF15-2038-1).
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?     Asked on 6/24/2015by jim

will this work on NS-36 18" tank
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A  Answered on 6/24/2015 by InyoPools Product Specialist Hector F.

Yes this o-ring will work on the NS36 filter.
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?     Asked on 4/17/2016by Dennis

Will this fit ns 24
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A  Answered on 4/18/2016 by InyoPools Product Specialist Lennox H.

Hi Dennis, This 18" Tank O-ring will fit the NS24 filter.
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?     Asked on 5/5/2016by wendell deweese

Will this o-ring fit PF 35 stainless filter?
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A  Answered on 5/5/2016 by InyoPools Product Specialist Charlie R.

Wendell,Yes, the 18" tank o-ring (part # 4600-2127) will fit your PF 35 filter.
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?     Asked on 6/26/2016by Steve U.

Will this 0-ring fit Pac-Fab Model # RM-45 DE pool filter?
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A  Answered on 7/2/2016 by InyoPools Product Specialist Lennox H.

Hi Steve, I was not able to locate a Pac-Fab RM-45 filter.  If you can provide additional info we can confirm or if you have the serial number of the unit you can contact Pentair at 1.800.831.7133 to confirm.
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?     Asked on 8/16/2016by Tom

Will this O-ring fir a Sea Horse Filter (PSH300)?
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A  Answered on 8/19/2016 by InyoPools Product Specialist Stacey M.

Hello Tom, it fits a Pac Fab Sea Horse Stainless Cartridge to look at the filter breakdown and see Parts. Your tank O-ring, 18" Tank (pf15-2127) would work for this unit.
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?     Asked on 2/8/2017by tim

will this fit nautilus ns filter .mfg in 1990
 Reply

A  Answered on 2/8/2017 by InyoPools Product Specialist Lennox H.

Hi, Tim. Yes, this o-ring will fit the Nautilus NS filter.
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?     Asked on 5/31/2017by Tom

Will thistank seal o-ring fit the Nautilus plus NSP 60 Stainless steel DE FILTER ?
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A  Answered on 6/2/2017 by InyoPools Product Specialist Patrick P.

No you will require this NSP60 Tank O-Ring
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?     Asked on 7/2/2017by thomas

I have a nautilus stainless steel filter ns--48. The 18" o ring are to large. Is there a smaller o ring for this filter like 17"' Thanks t cottler
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A  Answered on 7/4/2017 by InyoPools Product Specialist Alex V.

Thomas, Unfortunately, there is only one size (18") for this filter model. 
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?     Asked on 5/9/2019by stephen

Will this fit nautilus nsp36 filter tank
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A  Answered on 5/9/2019 by InyoPools Product Specialist Lennox H.

Hi, Stephen. This Tank O-ring will not fit the Nautilus NSP36, you will need to use p/n P24225.
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?     Asked on 7/22/2019by Karl

I am concerned to order this. Seems that there are generic 18" O-rings claiming to be replacements for 152127, but when installed are too big. Just bought one from local pool store and it too was too large. I see on AMZ that other people are having the same issue, while some are not. Seems it is hit or miss whether the o-ring is actually 18" or 19" even if it has the 152127 or O-184 part number. How can I be assured this generic is indeed 18" and thus not too big?
 Reply

A  Answered on 7/23/2019 by Industry Professional

Sorry but we have this o-ring for the Pentair/PacFab Nautilus NS systems specified at 18-1/2" x 7/16". This is confirmed to fit the Pentair / Pac-Fab Nautilus Stainless NS Series D.E. Filter.
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?     Asked on 4/14/2020by Brian

My old ring is triangle profile not round. I have a 15+ year old stainless de filter tank 48sq ft and the tank inside dimension is 18". I have purchased the 152127 and it is at least a half inch to big. Do you sell the 18" o-ring with the triangle profile?
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A  Answered on 11/24/2020 by InyoPools Product Specialist Megan C.

Unfortunately, no, they are no longer available. The Tank O-ring 18" Generic - PF15-2127 O-184 and OEM Nautilus Stainless Filter Tank O-Ring - 152127 are only for (18" O-ring) for Nautilus Tank O-Ring *AFTER 2001.
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?     Asked on 5/27/2020by James

Hi there! Will this fit a Heldor Clearflo DE 36?
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A  Answered on 5/27/2020 by InyoPools Product Specialist Hector F.

Yes, this is the correct lid o ring fo the model Clearflo D.E.36 model filter. 
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?     Asked on 10/8/2020by Inyo Visitor

Will this fit a 1990. Ns-72 stainless steel tank. Naulitus
 Reply

A  Answered on 2/5/2021 by InyoPools Product Specialist Hector F.

Hello, yes this o ring is compatible with the Pac Fab Nautilus Stainless D.E model NS72 filter.  
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?     Asked on 4/23/2021by Stan Mitchell

I have a stainless Steel D. E. filter (Model# NS24). My hired technician states that he can't find this o-ring because its discontinued and not available. Is this o-ring available for purchase?
 Reply

A  Answered on 4/30/2021 by InyoPools Product Specialist Danny R.

We do carry a lot of the orings for the NS24.  Here is the parts breakdown so we can make sure you get the proper oring you are looking for... Pac Fab Nautilus Stainless D.E.
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?     Asked on 6/9/2021by Diane

Will this o-ring fit my Nautilus (Pac-Fab) model # NSS-48? My DE canister is stainless steel and is at least 25 years old. If this is not the correct o-ring, is one available?
 Reply

A  Answered on 6/9/2021 by InyoPools Product Specialist Craig C.

Hello Diane.   The Armco Tank o-ring PF15-2127 O-184 is compatible with the Nautilus (Pac-Fab) DE filter model NS48.  Attached please find an exploded view of parts available for your filter.   Pac Fab Nautilus Stainless D.E.
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?     Asked on 10/21/2021by DANIEL ANTONELLI

What is the cross section
 Reply

A  Answered on 10/21/2021 by InyoPools Product Specialist Craig C.

Hello Daniel.  The cross-section diameter of the Armco Tank O-ring PF15-2127 O-184  is 7/16".
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?     Asked on 10/21/2021by DANIEL ANTONELLI

Will this model fit an American Products Model DC-36 filter
 Reply

A  Answered on 10/21/2021 by InyoPools Product Specialist Craig C.

Hello Daniel.  The Armco Tank O-ring PF15-2127 O-184 fits the Pentair/Pac Fab/ Nautilus Stainless NS Series DE Filter.   The American Products Filter model DC-36 did not cross-reference to this Tank O-ring.
 Reply