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Frequently Asked Water Filter O-Ring 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.
BF Wrestling Mama
Reviewed in the United States on September 8, 2021
This washer fit perfectly on our AquaPure water filter casing, but I only needed to buy 1 and it came in packages of 3!
MLH
Reviewed in the United States on May 1, 2021
Good quality o-rings for our AquaPure SST1HA stainless steel industrial grade water filter housing.
Bdw
Reviewed in the United States on October 4, 2021
The rings do not fit my 3M SST1HA housing. After printing the sizing picture they actually match the GE KWGE25RG. Possibly a packaging error?
Hooster
Reviewed in the United States on March 11, 2020
It was supposed to be a simple water filter replacement. When everything was put back together. Turned on water to check for leaks. I could see air bubbles coming from top of filter assembly then water. Needed a new O ring, the old one had hardened. I ordered the new O ring. Item offered 1 day shipping. It was delivered the next day 🌝. The O ring was an exact fit. Installed in 5 minutes. Tested and there were no leaks coming from the water filter 😃 but there was a leak on one of the water line connections. A simple run to Home Depot condition corrected. Happy wife happy life 😳
Klambo
Reviewed in the United States on December 12, 2019
A little pricey, but you have to pay for convenience.
Skyhawk
Reviewed in the United States on September 4, 2018
These O-rings are perfect for my Warp Drive engine. They do an excellent job of sealing in the Dihydrogen Monoxide used for cooling. Without these great O-rings I could never generate warp fields to form a subspace bubble that envelope my starship, distorting the local space-time continuum and moving my starship at velocities that can greatly exceed the speed of light. (They're also great for our hot water filter.)With a name like "Captain O-Ring" how can you possibly go wrong?Excellent quality, and highly recommended.
DL
Reviewed in the United States on October 10, 2018
We tried another o-ring that we had and it didn't work. With this on our AP filter it lined up and sealed the canister perfectly! Yes - I would buy again but it will be awhile as the package had 3 o-rings.
RC
Reviewed in the United States on January 17, 2017
These were exactly what we needed for our filter system. Great product and fast delivery!
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