Tube Union Fitting
Brass compression union / coupling. For use with polyethylene and nylon plastic tubing. Fittings have removable brass nuts with built-in compression sleeve on both ends. Sizes 1/8 and 3/16 have a brass compression sleeve. Sizes 1/4 and larger have a plastic sleeve. (Tubing size = outside diameter "OD" of the tubing). Temperature range -40°F to +225°F.