resilient shock absorbing pads that fully support ground contacting portions of machines , equipment or other loads and , thereby , provide protection from shocks and vibration . the pads receive the ground contacting portions of a load , such as a base plate . described pads are square - shaped and are substantially formed of a resilient shock and vibration absorbing material , such as elastomer . it is particularly preferred that the pads be fashioned from compression - molded crumb rubber that is readily available from recycled tires . the pads also include structures , such as recessed portions or an upwardly extending rigid dowel , that help to stabilize a load .