Spring seat rubber

The invention provides a spring seat rubber that achieves improved rigidity to suppress the coil spring's displacement in the direction orthogonal to the axial direction when receiving a lateral forcefrom the spring. An upper spring seat rubber (24) includes an elastic portion (36) made of urethane and an insert ring (38) contained in the elastic portion (36). The insert ring (38) has a first extension portion (62) extending between the sectional center (O) of a coil spring (14) and the upper spring seat (20) in the radial direction of the upper spring seat rubber (24) and a second extensionportion (64) extending between the sectional center (O) of the coil spring (14) and the upper spring seat (24) in the axial direction (T) of the upper spring seat rubber (24). 本发明提供种弹簧座橡胶，在被付与了弹簧横向力的情况下也会抑制向与轴垂直的方向的位移量并提高刚性。上部弹簧座橡胶(24)具有由聚氨酯构成的弹性部(36)、和内包于弹性部(36)的嵌件环(38)，嵌件环(38)具有在螺旋弹簧(14)的截面中心(O)与上部弹簧座(20)之间沿着上部弹簧座橡胶(24)的径向延伸的第1延伸部(62)、和在螺旋弹簧(14)的截面中心(O)与上部弹簧座(24)之间沿着上部弹簧座橡胶(24)的轴向(T)延伸的第2延伸部(64)。