Developed friction snubbers changes the shock or vibration into a heat energy by mechanical friction. Snubber is divided into friction snubbers and hydraulic snubbers according to the operation types. However, hydraulic snubber has a lot of problems caused by temperature, humidity, radioactivity, and viscosity of hydraulic fluid. In these respects, to solve these problems, not only do friction snubber supplement lacks of hydraulic snubber but has also simpler structure than hydraulic snubber. In this paper, friction snubber used sponge iron by friction material is experimentally compared with general friction snubber In this results, the experiment verifies friction function and produce the manufacture condition for the effective friction snubber development.