There is nothing more annoying than doing a nice paint job on a bathroom, only to have the escutheon covering the toilet water supply rust.
I tried using shellac, and it only bought me about a month.
Would polyurethane or spray lacquer work?
I don't really want to invest any more than $3 on a simple thing, and I don't understand why they make this crap so cheaply. Bathrooms are _supposed_ to be moist.