A length of reinforced colour-coded flexible tubing produced according to ISO5359 intended to conduct compressed oxygen (O2) from an O2 terminal unit or O2 cylinder to a medical device that functions with O2 (e.g., ventilators, anaesthesia unit, analgesia unit, and other O2 dependent respiratory device). The gas pressure in the tubing will be low, a "working pressure" (e.g., 3 - 5 bar), having been reduced by a regulator from a high pressure. The tubing is reinforced with, e.g., woven polyester or cotton and intended for use within a static clinical environment (e.g., intensive care). It is available in various lengths; some types may include an integrated mount. This is a reusable device.