This is the second purchase I have made. The first leaked every time the filter was changed. I would have to reseat and reseat the filter several times before it stopped leaking. Last time it didn't stop flowing until I unhook the whole system, brought it inside, cleaned it, put it back together and it stopped flowing. This time I ordered a brand new system so I could install a new unit with this issue while I cleaned the old one. The new block leaked just like the old one no matter how many times I planted and replanted it. Yes, the O-ring was ok. I will no longer buy a Filtrete filter system.
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