BUFFER STOPPER

There is provided a cushioning stopper having a two-stage characteristic.The cushioning stopper includes an elastic body 11 with a ring shape formed to have a size that can be mounted in a mounting space, and an elastic body restraining member 21 disposed so as to cover a part of an outer periphery of the elastic body 11 and preventing expansion of the elastic body 11, wherein the elastic body 11 has a first elastic body 12 provided between two members that are relatively displaced in an axial direction, and compressed in the axial direction by the two members to expand radially outward when the distance between the two members is reduced, and a second elastic body 13 formed to project outward from an outer peripheral surface of the first elastic body 12 on one end side in the axial direction of the first elastic body, the elastic body restraining member 21 is formed to have an L-shaped cross section covering an end face on the one end side of the elastic body 11 and an outer peripheral surface of the second elastic body 13, and the second elastic body 13 has a recess 14 on an end face opposite to the one end side in the axial direction, which is recessed inward from the end face.