ELASTIC TUBULAR DEVICE AND INFLATABLE HEAD HARNESS FOR AIRCRAFT BREATHING MASK

摘要

An elastic tubular device comprising - an inner tube (23) made of an elastic and gas imperméable material; and, - an sheath (21) surrounding the inner tube and made of a woven cloth of flame résistant meta-aramid yarns, wherein the tubular device has a longitudinal extension of at least approximately 1,4 when inflated by a gas having a pressure of at least approximately 0.5 bar.