EZ-Dry Polyurethane Sealer is easy to use and can be applied under both water and oil based finishes, the company says.  This quick-drying oil sealer offers the following advantages: dry times average three to four hours; eliminates grain raise, allowing you to achieve smoother end-results; the versatility to be used under water or oil makes it a great choice every time; sands easily, flows well, and is self leveling, according to the company.