I sealed the tank today. We'll see. It was welded yesterday, sealed today and sitting in the basement curing. SUPER EASY! I had a bit of a time with the drying process - with the lacquer thinner and water- even with blowing air through it.... so I took a shop towel and stuck the majority of it in the tank, taped the rest off, shook it, used the air gun and got the rest of the free moving liquid. Then used the air gun to make sure the rest was dry. Followed the instructions, and it's draining/ curing as I type this. Way excited!