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💧 Seal the deal with flawless filtration!
The Captain O-Ring 3-pack offers precision-engineered replacement seals for Whirlpool water filter housings using 2.5-inch cartridges. Made from durable Nitrile Butadiene rubber, these O-rings ensure a secure, leak-free fit and come with a 1-year warranty, providing reliable maintenance essentials for your water filtration system.

| ASIN | B01BNWBO12 |
| Best Sellers Rank | #228,691 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #169 in Undersink Water Filtration Replacement Parts |
| Brand | Captain O-Ring |
| Brand Name | Captain O-Ring |
| Color | Black |
| Customer Reviews | 4.3 out of 5 stars 315 Reviews |
| Item Diameter | 3.48 inches |
| Manufacturer | Captain O-Ring LLC |
| Material | Nitrile Rubber |
| Material Type | Nitrile Rubber |
| Model | Whrl-WHKF-DWHV-3pkoring |
| Nominal Inside Diameter | 3.48 inches |
| Nominal Outside Diameter | 3.72 inches |
| Number of Items | 1 |
| Number of Pieces | 3 |
| Part Number | KE-6SFM-9PDX |
| Set Name | 3 Pack |
| UPC | 722589526602 |
| Unit Count | 3 Count |
M**Y
Item as listed. Perfect fit.
was exactly what we needed to stop our water filter from leaking .
K**C
Fits &Works
Right size and it works
R**S
Whole house filter rings
I purchased these even though the reviews were a bit mixed. I have a Westinghouse whole house filter and the original o-ring was getting wonky. When I changed the filter this dropped right in and sealed properly. Will buy again when needed.
E**1
No leaks
If you are not a plumber, even the simplest diy repair can quickly become a nightmare. The sediment filter on my fixer-upper farmhouse hadn't been changed in 2 years. It took a flashlight and magnifying glass to identify the manufacturer and replacement filter for my well water system. I am thankful that Amazon showed the Captain O-Ring as a companion purchase for the filter cartridge because the existing O-ring tore apart when I wrestled the filter casing open. New O-ring works perfectly. No leaks.
2**F
Good O-Rings
The 3 pack of O-rings comes in handy. Are very easy to install. Look to be made well, looking to see how long they last. They do look better then the ones I got from the last ones I got, they lasted a good year.
O**G
Does not fit the Whirlpool model it’s labeled to fit.
Slightly too large for the Whirlpool WHKF housing. Too large = not useable. The O ring fits into a groove in the canister and falls out when the canister is spun into place as it’s not in the groove… Buy the Whirlpool branded O rings- they are the correct size.
A**R
A bit challenging
They are a little over sized and difficult to get the vessel to close without leaking.
J**R
Fit my filter housing correctly
O-Rings were the correct size as described in product description, fit perfectly and sealed. Great product that I received on time.
J**Y
O-Rings
Perfect! Fits great! Will get more!
Trustpilot
1 week ago
1 month ago