Precision parts made of ethylene propylene diene monomer (EPDM) rubber, namely, seals in the nature of ball seals, O-rings, V-rings, X-rings, four-lobed sealing rings, six-lobed sealing rings, bonded mechanical seals, lip seals, mechanically spring energized seals, pipe seals, poppet seals, rod seals, valve seats, washers, gaskets, and pump diaphragms, bellows, bladders for accumulators, wipers and scrapers for reciprocating rods, all of the foregoing being parts of machines