Waterproof sealant?

Question:I am going to make coasters out of some old/worthless albums, does anyone know what kind of sealant I can use on them so that the labels will be water proof?

Answers:
there is a product called "Envirotex". It is an epoxy that dries quick and clear. It comes in a purple box and comes in all sizes from a few ounces to a gallon. You just mix the two parts and pour over your coaster and let set for a couple hours. It will dry about 1/16" thick. Make sure to elevate your coaster while doing it so the excess can drip off. Sand or scrape off the drippings from the underside of the coaster when it dries.

Easy as pie!

Oh yeah, you can get it at most hardware stores, I see it everywhere