Our threaded tank outlet is made from glass-reinforced nylon and comes complete with 2 large flexible rubber washers to ensure a perfectly waterproof fit on all plastic tanks and troughs. For galvanized steel tanks, use the corrugated tank gasket kit with the appropriate size tank outlet fitting. Never have a tank fitting come loose again! Select extra tank outlets from our extensive range of high quality, flange type heavy-duty brass fittings complete. Conveniently designed to connect pipes or fittings of different diameter, material, and end type. Our brass connector fittings do not deform with time, and easy to install or change, will not leak.