The radome for vehicles comprises a substrate (1) and a cover (2) joined to each other, said radome defining a field of view (F) for a radar, and it is characterized in that the substrate (1) and the cover (2) are made from the same material and in that the substrate (1) and the cover (2) are joined to each other by welding and by a sealing element (4), said sealing element (4) being placed outside said field of view (F). The attachment process is simplified by transferring the water tightness responsibility to the sealing element, while the welding provides the attachment control between the different parts.