These materials will substitute for neoprene in areas where vibration or heavier loads are present. The random fiber material is well-suited to concrete construction as a cost-saving alternative to neoprene or preformed fabric pads. These materials may be provided with holes, slots or surfaced with Teflon (PTFE). CON-SLIDE™ Type RFR may also be used in conjuntion with a Type CSA or CSB assembly.