Fuller Nut & Flare Union ✅

Flare fittings are a type of compression fitting used with metal tubing, usually soft steel, ductile (soft) copper and aluminum, though other materials are also used. Tube flaring is considered to be a type of forging operation,[1] and is usually a cold working procedure. Flare fittings on the end of copper tubing should provide a strong connection to a fixed point with a threaded nipple.