I lost the little O ring that goes around the top of the protank 2 in between the drip tip and the tank itself... Sometimes now when i tilt my tank or something a little juice gets into the top of my drip tip OR leaks a little tiny bit through the atomizer head and onto the battery connection i need something SAFE to put there maybe like a plumbing O ring or what i want something that wont melt or stink etc.... that is safe to put there please help !!! i just realized i am missing the o ring because i just got a NEW protank 2 and it obviously has an O ring on the bottom and top of the tank itself lol thanks for the info guys... 