1.1 This International Standard applies to high-pressure flexible connections intended to be connected to cylinders or cylinder bundles with nominal filling pressures up to 25 000 kPa at 15 °C for use with the following medical gases:. oxygen;. nitrous oxide;. air for breathing;. helium;. carbon dioxide;. xenon;. mixtures of the gases listed above;. air for driving surgical tools;. nitrogen for driving surgical tools;. oxygen-enriched air.1.2 This International Standard applies to high-pressure flexible connections intended to connect cylinders or cylinder bundles to manifolds within sources of supply of medical gas pipeline systems complying with ISO 7396-