An axle boot for joint sealing, in particular on the drive train of motor vehicles, includes a substantially axisymmetric bellows, which is designed as a single piece with a connecting collar. The connecting collar has a plurality of indentations projecting towards the inside that are adapted to radial recesses in the external contour of the joint housing. To the outside of the connecting collar are attached compensating pieces that complete the external contour, forming a cylindrical circumferential surface on which a clamp is located.