Profile: Duramax® Marine, LLC specializes in boat and marine equipment. Our products include bearings, cooling systems, sealing systems and fendering systems. Our bearings possess inherent vibration-dampening qualities and are non-polluting. Grit particles and other abrasives wash into grooves & are flushed away, protecting the shaft & prolonging bearing life. Our Duracooler® is streamlined so that its header design reduces pressure drop in water flowing through the cooler. External water travels quickly to tubes increasing the heat transfer efficiency of the cooler. It is available with through-hull type fittings, or non-through-hull flanges. Our brass-shelled sleeve bearing is precision machined and naval brass shell.