Something else I have used is to sand the file cabinet, prime it and use ceramic paint, applying it with a foam brush. It works great, is extremely durable once it has cured, and I got no streaks. This paint isn't cheap and it is somewhat hard to find, but it is great for baths, kitchens, hallways etc. You can get it in a flat finish as well as satin and gloss. Once it has cured, you can scrub it.