Gapless viscous damper

The utility model provides a gapless viscous damper, which relates to the technical field of dampers and comprises a cylinder body, a cylinder rod and a piston, the cylinder rod is arranged in the middle of the inside of the cylinder body, the piston is fixedly mounted at the bottom end of the cylinder rod, and a hollow rod is fixedly mounted at the top end of the cylinder body close to the cylinder rod. According to the utility model, through the arrangement of the sealing ring B, the sealing ring C, the hollow rod, the sealing sleeve and the check block, the junction of the cylinder rod and the cylinder body is sealed in a multi-layer manner, the sealing effect of the junction of the cylinder rod and the cylinder body is better, and the phenomenon that a gap is formed in the junction of the cylinder body and the cylinder rod due to the damage of a single-layer sealing structure caused by the repeated up-down movement of the cylinder rod is avoided; according to the improved viscous damper, more effective da