To obtain a damping effect not less than a fixed amount in a wide frequency range.

An inner cylindrical fitting 20 is disposed inside an outer cylindrical fitting 12, and a first damping plate 32 formed into a disc shape out of metal is coupled to the inner cylindrical fitting 20. Between the inner cylindrical fitting 20 and the outer cylindrical fitting 12, an elastic element 22 made of rubber and formed into a ring shape is arranged to couple the inner cylindrical fitting 20 and the outer cylindrical fitting 12. A space formed by surrounding with a bottom surface of the elastic element 22 and an inner peripheral surface of the outer cylindrical fitting 12 is defined as a liquid chamber 24, and the liquid chamber 24 is filled with liquid. A second damping plate 34 and a third damping plate 36 which are formed into a disc shape out of metal are supported by the elastic element 22 in formation dividing the elastic element 22 into three equal parts.