a single layer of resilient polymeric material such as rubber the single layer is shown by way of example and without limitations as having webbing 20 that is generally circular in cross section though it should be recognized that the webbing 20 could be constructed having any suitable shape in cross section in yet another example fig5 shows a body 12 constructed from at least two different materials wherein the body 12 has a core 24 of a first material for example a generally rigid material such as a generally flat layer of metallic material and a pair of opposite second outer layers 26 27 of material for example less rigid more compressive and resilient layers of polymeric material it should be recognized that the core 24 and outer layers 26 27 could be formed from any suitable gasket material and layered having any suitable number of layers with varying thicknesses as desired further the outer layers 26 27 could be formed of different materials such that one outer layer 26 could be formed from one resilient polymeric material while the other outer layer 27 could be formed from a different resilient polymeric material for example additionally it should be recognized that the core 24 could be covered on a single side not shown such that in this example one side would have the metal core 24 exposed while the other side would have the more resilient layer exposed in this example the layers of material are shown having a rectangular or square shape in cross section wherein the outer layers 26 27 do not fully encapsulate the core 24 such that the core 24.