This invention provides an improved shock eliminator, particularly a shock eliminator for use in constructions such as bridges and houses. The graphites sheets are infused with a sealant to fill about 90 volume percent of the pores contained in the sheet. At least one among the plurality of cells is programmed. The belt deflector is covered by the seatback cover which has a belt-passage through-opening which coincides with the belt runner opening and is covered on the front face of the seatback by a belt cover which has a belt-guide slot and is connected to the seatback cover. A plurality of punchouts are disposed in the upper profile walls, disposed in at least one row and at regular, repeated distances as seen in the longitudinal direction of the rail, and barb-like catch pawls are disposed on the slip contact bolder and engage with the punchouts in order to attach thereto.