Rigid buffers used as end stops or to limit the stroke of moving parts give rise to high impact stresses to structures often causing visible deterioration. This is normally accompanied by unacceptably high noise levels to the human ear, particularly when these impacts are repeated periodically. Rubber buffers eliminate these drawbacks considerably, as they dampen sound and absorb energy . The simple buffer has a flat surface of rubber and therefore responds immediately to impact, without over-extending the stroke of the moving part. The progressive buffer has a conical form and therefore makes contact on a progressive basis, increased deflection with increased load. This action is much more gradual and is particularly good for a considerable absorption of energy, without causing instant stress. UNSPSC Codes: 23153130
