Abstract: The invention is directed to a capacitor winding (9) having a layer stack (1) that is limited by two end faces (2) in a longitudinal direction and by one or more lateral surfaces (3) transverse to the longitudinal direction, comprises electrode layers (4) and parting layers (5) proceeding in longitudinal direction, and having a single-ply sheath (6) of electrically insulating material that covers the lateral surfaces (3) of the layer stack (1) gap-free and that comprises a projecting section (7) at an end face (2). The invention is also directed to a capacitor having the capacitor winding (9). The sheath (6) can be especially advantageously implemented as shrink hose that protects the capacitor winding (9) against damage upon insertion into a housing (10).