For many years, rotational molding has proven to be the ideal method of producing a seamless one-piece tank that minimizes the risk of leaking. Tanks may be interconnected easily for increased storage capacity (1700 gallons, 3400 gallons, 5100 gallons etc.). No water is required during backfill procedure. Snyder Tanks is a leading manufacturer of plastic and polyethylene tanks. Founded in 1957, Snyder Industries is a recognized leader in the manufacturing of tank and containment solutions for the bulk storage, processing and transportation of a wide variety of liquid, solid and dry materials.