Outer cover
Thermal hose – is used to protect personnel working in close proximity to the metal hose, from burns or frostbite, while transporting media of low or high temperatures.
Rubber cover - allows to protect the metal hose braid from any mechanical damage.
Spring - provides protection of the flexible part of the metal hose from fractures. As a rule, it protects the place of end fittings from bending, sometimes it is installed along the entire length of the metal hose.