WeatherSealprotects and maintains the natural wood look for a variety of outdoor wood products and structures. No need to purchase and store separate stain products. It’s all conveniently and economically found in a single container of WeatherSeal. Save money, time and unnecessary clutter & waste disposal because of partially full and expired cans of unused stain products and additives. Plus, WeatherSeal’s shelf life is excellent. Depending on storage and amount left in the partial container, 8 to 10 years is a reasonable shelf life.