Zinsser Bulls Eye SealCoat Universal Sanding Sealer saves time when finishing porous woods. This high-building solution seals the wood to create a surface that can be easily sanded to contribute to an ultra-smooth final finish. It's manufactured using a patented process that guarantees long-term stability and shelf-life while the absence of any wax makes it compatible with all clear finish topcoats including oil-based polyurethanes. Features Great for sealing all interior wood surfaces, including hardwood floors 100% dewaxed, shellac-based, sanding sealer dries lightning fast and can be sanded and recoated in minutes Adheres to any existing finish and serves as a bond coat under new finishes Can be used as a pre-stain conditioner for pine and softwoods Gives extra beauty and warmth to water-based polyurethanes Will not darken or yellow with age Made in the USA