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Your cart is empty.The OK25 o-ring seals between your filter housing and filter head/cap on OmniFilter OB1, WH5, and U25 water filter housings. The OK25 o-ring kit contains four different o-ring sizes. This convenient 2 set package contains 2 of each size, for 8 o-rings total.
What to expect:
This item includes eight (8) o-rings in a resealable zip-top poly bag with "Captain O-Ring" branded packaging.
Manufactured and warrantied against defect for one year by Captain O-Ring LLC. "Captain O-Ring" is a registered trademark of Captain O-Ring LLC.
MS
Reviewed in the United States on February 26, 2025
I bought this kit for an Omnifilter model OB1. None of the orings fit. None would stay in the groove. I worked with orings extensively throughout my career. I know what I am talking about. I am completely unsatisfied with this purchase.
Ellen C
Reviewed in the United States on February 13, 2025
Order this o-ring for the older Omnifilter 0B1 (with the blue o-ring). "O-ring Size 238, 3-1/2" ID x 3-3/4" OD x 1/8" thick". This should have been stated in the description.
Lori Booth
Reviewed in the United States on May 6, 2024
Fit
Pilipo
Reviewed in the United States on February 7, 2024
Prompt service, good value
John Giltrop
Reviewed in the United States on November 15, 2024
Fits well and no leaks. Slides right on.
Chris T.
Reviewed in the United States on October 14, 2024
Didn’t have to figure out what size to get with this kit and it had two of all the sizes for my brand of water filter. Worked perfect
Dave
Reviewed in the United States on June 1, 2023
I received a kit of various sized rings. AlI wanted was a pack of same size rings. The size used when changing the filter. Rings were good but not what Ineeded.
Carun7
Reviewed in the United States on May 10, 2022
The sediment filter brand have a replacement o-ring part number; however, there are several of this brand’s o-ring using the same part number. But, here is the kicker, that same part number cover at least 4 different diameter of o-rings. So, this set of o-rings was perfect as I could select which o-ring actually fit my filter housing. I also have an extra o-ring to boot. Thank you! Great a simple solution. The company making the filter housing I purchased never gave the o-ring size and thickness. No way to search and find one until Captain O-Ring came along.
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