DC-901650-1.5, Duracast 1650 Gallon Plastic Storage Tank | 901650 With a high resistance to both chemical and physical attack, these plastic tanks are the perfect vessel for storing a wide range of contents. Some of the more common contents people use these vertical tanks to store include industrial and agricultural chemicals, liquid fertilizer, certain acids, liquid feed and water. Using exceptional technology, these vertical tanks are rotationally molded and turn out as a one-piece container with no seams. These tanks are made of durable polyethylene resin that is both UV stabilized and FDA approved for better, safer storage capabilities. Their high resistance to corrosion and rust keeps these tanks standing strong for years so that you do not have to worry about leaks. This is a 1.5 specific gravity tank.