I have to seal a display case to turn it into a terrarium and I came across this stuff at Lowes but can't find anything on here saying its safe. Here's the website to the product Glaze Coat High Build Epoxy Coating thanks
I haven't used it personally but I do know someone who did. This person may have gotten a bad batch or somthing but a fter 6 weeks it was still tacky and never did really dry. I would look into use a product called "Waterlox". Its a tung oil based product and is very durable. I used it my wood counter tops which get the crap abused out them and has held up with out a problem.