[VAL] leaking hot water heater

[Hahnstead@xxxxxxx]

I have a 66 Globetrotter with the original hot water heater. It's had a small 
leak for over a year now and I finally pulled it out and have discovered a 
pin-hole size leak in the bottom of the tank. It appears that the entire bottom 
is corroded from the inside and more leaks will probably occur in the future. 
An RV dealer/technician suggested to me a procedure called "glassing" the 
inside of the tank. Apparently, one can buy an substance which can be put into the 
tank, spread around by moving the tank and then allowed to dry for a day or 
so. This substance will provide a waterproof sealant from the inside. Sounds 
like a better plan than replacing the heater with a new one, which certainly 
will not look as though it belongs on my 40-year-old trailer.   
My questions: (1) does anyone know where I can purchase this substance? (2) 
What is the best way to assure that I have the inside of the tank thoroughly 
dry before I pour in the substance? (3) Has anyone tried this procedure and if 
so, how did it work?

Thanks!
Paul F. Hahn
WBCCI/VAC 4753