EPDM is a terpolymer of ethylene, propylene, and non-conjugated diene. Its main characteristics are superior resistance to oxidation, good ozone and erosion resistance, and excellent electrical insulation properties. Since EPDM rubber belongs to the polyolefin family, it has excellent vulcanization properties, and has the lowest specific gravity among all rubbers. EPDM can absorb a large amount of fillers and oils without affecting the characteristics. Therefore, a low-cost rubber compounding can be produced.