Abstract: There is provided a clamp for clamping an object from an outer side of the object to fix the object while the object has a cross-section with a circular outer periphery. The clamp includes: a hard segment that is made of a hard material and is shaped in a tubular form; and a soft segment that is made of a soft material and is located on an inner side of the hard segment. The soft segment includes: an arcuate portion which has an inner edge that is arcuate; and a plurality of projections which project inwardly from the arcuate portion and is configured to urge the object. Each of the plurality of projections has a relief hole that extends through the projection such that the relief hole has a shape that corresponds to an outer shape of the projection.

Abstract: A cylindrical rebound cushion (8) is fitted to an outer circumference of a piston rod (5) inserted in a cylinder (3) of a hydraulic shock absorber (1). An upper end surface (8a) of the rebound cushion (8) comes Into contact with a rod guide (6) fixed to the cylinder (3) when the piston rod (5) reaches a protruding limiting position. Recesses (9) are provided in the upper end surface (8a) of the rebound cushion (8) at regular angular intervals in order to provide working oil between the rod guide (6) and the upper end surface (8a), thereby ensuring smooth rotation of the rebound cushion (8) with respect to the rod guide (6) when the piston rod (5) at the protruding limiting position and the cylinder (3) relatively rotate.