RE: What to do I use to seal Polyester material?
Deft is a laquer furniture finish. Comes in gloss and semigloss. Yes, you will find it in the paint department of Walmart or Home Depot. It is not so cheap though espicially the spray. I paint or nitrate dope over it just fine. I have used the $1 a can spray paint at Walmart over it too. Not fuel proof but I just build electrics.