NO! Silent Feet are made of an advanced visco-elastic material which is not rubber. It is also not a Styrofoam like material that may either not absorb the vibration you require or break down over time. Sorbothane retains it's vibration absorbing properties after millions of cycles unlike other materials which can degrade after just a few thousand cycles. As mentioned in the “what is Sorbothane” section Silent Feet are made of a patented, one of a kind material, the same vibration reducing material trusted by NASA and NASCAR. (Yes NASA the space exploration people and yes NASCAR the National Association for Stock Car Auto Racing)