The invention relates to an inhaled air supplying device, in particular, an endotracheal tube or a tracheostoma cannula comprising of at least one tube ( 1 ) and at least one cuff ( 2 ) which is fillable with a fluid and arranged outside of the tube for sealing said tube against an air conduit wall ( 10 ). In order to provide inhaled air supplying devices devoid of known disadvantages, the invention is characterised in that the cuff comprises, at least sectionally, a wear-resistant surface layer ( 6, 7 ) whose thickness is less than 10 mum and which modifies the surface of the device material.
