Uniseals

[Gujustud]

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Anyone used these before? They were so cheap I bought a few and finally got them after 1-1/2 months (shipping mixup they say ).

I was going to use them on my skimmer, instead of regular bulkheads, but I'm a "little" worried about leakage. My skimmer will be in sump, but I'd still like to know its sealed properly if I ever decide to move it outside my sump.