fhibbs12,
I'm not so sure about the copper gasket material from Autozone. I would recommend holding both materials and looking at the suggested usage on both items and especially the ingredients, temperature range, water resistance and so-on. Is this the valve cover or the barrel to the top of the engine? It is a little unclear to me. Also Is this a Honda or?? If it is a Honda I am almost certain that they use "O" rings not sealant. Not sure about the barrel to the top of the engine.
A little more info would be great.
Sid