Originally Posted By: satinsilver
An excellent spray sealant is Duragloss Aquawax for around $10
+1
In reality, there are a myriad of products that will suffice in light of the expressed criteria. As AW is a spray, it doesn't quite fit, but there are still lots of options; just pick a manufacturer and you can find a product that will be adequate. Collinite 845 if the temperature is right, Rejex as I mentioned before, maybe even NuFinish if you aren't too critical.
Close your eyes and toss a dart.