The buffer uses a rotationally symmetrical rubber body (1) with a bottom section (2) defining a hollow space (8) and an upper section (3) with a planar endface (4) and a stepped outer contour (5) exhibiting a tapering dia. in the direction of the endface. The outer contour of the upper part has a section (5a) adjacent the endface with its sides inclined at a greater angle than the sides of the remaining section (5b). The max. height (H3) of the hollow space is less than the height (H1) of the first section of the upper part.
