I have 2.5 gallons of this in my shop, picked it up at a local retailer on closeout about 3 years ago. I am planning a kitchen cabinet build and am thinking about using this as my topcoat over dewaxed garnet shellac and (possibly) BLO. I sprayed this on a shoe rack a few years ago and it has held up well so far. It also brushed well today on samples. The package says it can be used for cabinets and all interior wood finishing. Does anybody have any concerns? I don't see an expiration date on the can.