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Your cart is empty.OMNIFilter's K4 undersink drinking water O-ring kit is for use with OMNIFilter filter housings OT32, CBF1, CBF3, USM3, SFM2, OCT2, RO2000 and RO2050. Kit contains O-rings that fit most Culligan and DuPont undersink filter systems. Kit contains 4 different sized O-rings and silicone lubricant.
JoeBoxy
2025-08-29 13:29:30
Not the right size or quantity as advertised. It's two rings and not the correct size
Michael Z.
2025-07-26 13:51:53
It work GREAT
Mike Mc
2025-07-19 11:46:25
I bought this for my circa 2022 WH5 Omni Filter at the recommendation of the filter manufacturer. Only one of the four rings will fit the filter. Apparently, different model years of the filter require different O-Rings. This bundle covers all the possible O-Ring sizes for the WH5 filter you may have. I really don’t understand why you can’t buy just the O-Ring you need based on when you purchased your WH5. Also, the O-Rings today are not as durable. I used the same O-Ring in a similar filter for 15+ years and had no issues. That is not true now.
Anthony Burkel
2025-07-10 18:03:02
I'm very pleased with this purchase
Siddigger
2025-07-02 13:18:18
Only one O Ring and seller knows it when it states two. Now instead of $4.75 a ringam paying $10 for one with tax. Read the reviews for proof and my picture I am better off going uptown and buying the complete filter with new clear canister. At least I get what I paid for. It should absolutely come with a spare ring anyway. This is a money making deal from start to finish. When this is done I will purchase another brand filter. Make you wonder if the filter really does what it says anyway. Also rings are low quality and stretch out in a couple of changes as the replacement does not come with the new filter, so you have to buy this one. Good thing Amazon is a fast shipper while out of water and mopping the floor.
BillV
2025-06-27 16:14:12
This product fit perfectly and did not leak. All good.
MR. MICHAEL D.
2025-06-02 10:05:26
Excellent product. Thank you for making this product available.
David Haugen
2025-04-29 14:58:59
Supposed to get 2 o-rings and only got 1. Really frustrating!!
John Irwin
2025-03-09 16:14:38
Product quality is fine. The description clearly indicates that it is a kit and is suitable for a number of different filters. What is not clear is that you receive two different O ring sizes when only one will fit the BF7 model filter. Was hoping that the kit was two filters for my needs . Obviously one O ring not usable for my project.
Lilac Sue
2025-02-28 18:35:39
Of the 5 rings in the package, only 1 fits the OK25 filter and the size measurement listed in the description.
DaveyBoy
2025-02-15 15:45:42
They do not fit. The circumference is off.
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