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Frequently Asked Questions:
How often do I need to change my filter housing's o-ring?
Captain O-Ring's high quality replacement water filter housing o-rings are designed for reliable extended use. Still, it is typically recommended to replace your o-ring on every third filter change to ensure it is in top shape to prevent leaks.
Can I use grease or lubricant on these o-rings?
Since Captain O-Ring supplies high quality o-rings without surface imperfections or tacky/sticky surface texture, lubrication is typically not needed if the filter housing sealing surfaces are clean and free of debris. Simply wet the o-rings with water before installing. However, if lubrication is preferred, these Buna Nitrile rubber o-rings are compatible with silicone based and petroleum based lubricants, as well as natural lubricants like vegetable oil.
What if I don't know what o-ring part number my filter housing needs?
Not sure which o-ring part number you need for your filter housing? Use our handy printable water filter housing o-ring size chart. Simply print out the chart and lay your old o-ring on the page to see which o-ring it matches with. You can find the size chart listed as "User Guide [PDF]" under the "Product guides and documents" section or the "downloads" section on this page, depending on your Amazon page layout.
John W. Grant
Reviewed in the United States on January 28, 2025
Great company to work with.
Chinookman
Reviewed in the United States on September 9, 2024
Shipping O-Rings flat make it a perfect fit on first try on install.This small detail is greatly appreciated.
Gary F.
Reviewed in the United States on September 11, 2024
Fits my whole house water filter housing perfectly. Good price so should replace the seal each time you replace the filter. Be sure to use the proper silicone lube on it when installing the seal.
John A.
Reviewed in the United States on May 26, 2024
Lube these with food grade petroleum jelly prior to installing.
Mary
Reviewed in the United States on March 4, 2024
Works as well as original equipment. Better bargain.
KevCan
Reviewed in the United States on March 15, 2024
Fit the housing with no problem.
MinneMike
Reviewed in the United States on November 30, 2024
I tried O-rings from the local hardware store, the local plumbing supply, and then these for my W–10 PR. These work. Don’t bother with the others.
ValGal
Reviewed in the United States on March 29, 2023
Gets the job done at an attractive price. No longer leaking!
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