Product review (2 stars): The ring washer is the wrong size so it leaks
i ordered these about a year ago, and I ordered the same thing about a year and a half before that.  They have always worked until just now. i used the first of the three pack and it worked fine.  But the second one leaked right away.  So I put in the third one and it leaked right away too.  I thought the part of the fridge that the filter goes into must have gone bad.  But I put the bypass filter that comes with the fridge in and it didn't leak. So I swapped the black ring washer between the filter and the bypass and now the filter does not leak.  I can see that the washer that came with the filter is just the slightest bit thicker than on the one that came on the bypass so that must be the cause of the leaking.  It seems like other brands have this same problem too from reading their reviews.