DuPont WFAO150 Valve-in-Head System O-Ring

I got two o-rings in my package. I thought, Oh, nice! I thought I just bought one! So I grabbed one and installed it and it didn't quite fit. I thought, oh darn, the wrong o-ring! Well, I thought, I'll just try the other one on a lark. Oh, wonderful, the second one was a tiny bit smaller and fit like a turtle on a rock!

For those looking to purchase this there's two things to know. First off, a filter wrench is NOT included despite what the listing says. Secondly, there are two orings in the package but they are two different sizes. So in my case I have two filters so only one oring fit. I had to order two sets to get two matching orings.

There were two o-rings of different sizes (but close). I didn't realize this and tried for some time to put the wrong one in the filter.

I've learned to have at least one of these on hand as a back-up for immediate repair, and for the price it is worth having as that back-up instead of waiting almost 2 weeks to get one in the mail. It's not only a perfect fit for the water filter canisters, but a perfect seal as well. Get at least one as a back-up, you won't regret it!!

Eventhough it claims to be the right product its too large and doesnt fit properly.

Works great, my old ones lasted about 6-7 years and were leaking. These stopped the leaks.

This product cured the small leak in my water filter system. Very good product.

Does not come with the wrench as described, which makes the price high for just one o-ring