Why is my scepter water can leaking? I have a US surplus "scepter" water can that was new surplus when I got it. I don't think it is Scepter brand but when I posted pictures people said it was the real thing. Everything screws down tight on the cap. But if I lay it on its side after a few days my carpet is wet. I love the can but really want it stored laying flat. Should it have a gasket or something in the cap? Do I really need to use a Scepter wrench to get it tight enough? Do these just leak some times?