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BuckSkin 
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Joined: 12 Sep 2019
Location: Poor Farm
Points: 798
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 Topic: Culligan Water Filter O-Ring
Posted: 26 Jun 2025 at 4:14pm |
My Culligan water filter housing takes O-ring "B" that comes in the 2-pack Culligan OR-34A; NOT two O-Rings that I can use, but one each of two different sizes, "A" and "B"
I don't know this for fact; but, I believe that all the more recent Culligans use O-Ring A while my old antiques use ORing "B"
The price of this 2-pack has gotten ridiculous and lately Walmart has not been having them.
I see on Amazon that --- if I knew the exact dimensions of O-Ring "B", I can buy them in packs of 100 for less than ten cents apiece.
I have found in several sources the exact measurements of O-Ring "A" as it must now be the more popular; but, no luck yet in finding the size of O-Ring "B"
Do any of you guys know the exact dimensions of Culligan O-Ring "B" ?
Thanks.
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jaybmiller
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Joined: 12 Sep 2009
Location: Greensville,Ont
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Posted: 26 Jun 2025 at 4:33pm |
4 and 1/8" according to this hit...
I used 'culligan o-ring "b" for the search.....
LOTS of people sell them, so check around
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3 D-14s,A-C forklift, B-112
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
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Posted: 26 Jun 2025 at 4:49pm |
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Like them all, but love the "B"s.
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steve(ill)
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Location: illinois
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Posted: 26 Jun 2025 at 4:55pm |
About this item- 151120 o-ring for Pentek Water Filter Housing （4 pack）
- Size:Approximately 3.9" ID x4.15" OD x 0.14" Thickness
- Replacement for Part Numbers: Ace Hardware 46766, American Plumber 152030, W34-OR, Ametek Kleen-Plus 151120-03, OR-34, Culligan 01019184, 151120-27, DuPont WFAO150, Everpure EV3112-40, Hydrotech 151120, Pentek 151120, Omnifilter 151120, OR-34, Pura 151120, US Filter OR-34
- Compatible with Select Ametek, Ace Hardware, DuPont, Hydrotech, Omnifilter, Pura, Aqua-Flo and US Filter models
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Like them all, but love the "B"s.
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BuckSkin
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Joined: 12 Sep 2019
Location: Poor Farm
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Posted: 3 hours 56 minutes ago at 9:29pm |
Years and years ago, I bought a BUNCH of THESE for $1.29/pack; which, for all practical purposes amounts to $1.29 each.
Six bucks a pack now.
If I ever get something that uses the "A", I have enough to get by for years.
 jaybmiller wrote:
4 and 1/8" according to this hit...
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The way the filter housing is made and where the O-Ring goes makes it impossible to get even a close measurement and these larger diameter O-Rings don't lend themselves to getting an accurate measurement as they stretch and flop around too much.
Thanks to the outside diameter provided at jaybmiller's link, which is the first place I have found that actually provides any hint at what they measure, because they know that once you know you will seek them out in bulk, I was able to measure the thickness of my last brand-new one, do the math, and determine the other two dimensions.
Now that I know, I found THESE and have them on the way; 50-pack, FIFTY, for $15.71 tax-license-and put on the road.
When they get here, I will count them to make sure they sent me 50 and not 47(you would be surprised), I will measure them to make sure they are the right size, and I will hang them on the nail above the filter.
The wife's next husband, their kids, and their grandkids, should be set for life with water-filter O-Rings.
Thank you guys for all your help and information.
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