The 3M™ Versaflo™ BT-40 Breathing Tube connects any Versaflo Headtop to any Versaflo air source. It features a durable, heat-resistant neoprene rubber material for rugged applications.
When used with 3M Versaflo Supplied Air Regulator V-500E, the 3M Versaflo breathing tubes BT-series must be used.