A ferrule tube fitting consists of three main components: the body, the ferrule, and the nut. When the ferrule and nut are placed onto the steel tube and inserted into the fitting body, tightening the nut forces the front end of the ferrule against the body's tapered seat, while its internal edge bites uniformly into the seamless steel tube to create a leak-tight seal. Ferrule fittings are characterized by their corrosion resistance, high-pressure capability, ease of installation, and durability.