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Part of OK-25 package, but just the one size. Do not purchase this if your original o-ring was blue.
Steve Keller
Reviewed in the United States on September 30, 2023
These DO NOT fit Omni filter OB1!! Buyers beware! Wish I could submit 0 stars, but not allowed. I guess receiving anything is a 1 star rating here.
Mike Z
Reviewed in the United States on October 17, 2023
These o-rings were too big. I do have an OB1 filter, so I was under the impression they would work. I missed the return window by a day. So they go in the garbage and $18 down the drain. Also had to pay $5 for shipping!
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