Stab-O-Shoc is a hydraulic damping element and consists of a pressure tube with a connection fitting, a piston rod with piston system and a piston rod connection fitting. The piston rod in the pressure tube features damping piston and the related valve system. The movement of the piston displaces the filling medium (oil), which is pressed through the valve system and thus produces a damping force. Dampers are needed to influence the nature of movements and vibrations : They are designed to optimally match the particular application. They are used for example for injection pump damping, steering damping or belt-tension damping.