Abstract: A tubular device for providing a very small passageway suitable for discharging a product and a pressurized material from a container of the aerosol type, wherein the product and the material are disposed, upon opening of a control valve at one end of the tubular device. The tubular device is formed by twisting a plurality of elongate filaments in a rope-like fashion along the lengths thereof to forcefully close the surfaces of the filaments together along the entire length, thereby providing an elongate passageway between the twisted filaments. The exposed surfaces of the twisted filaments are coated with a suitable material for sealing the tube along its entire length.