The invention discloses an ethylene propylene diene monomer sealing element, prepared from the following raw materials in parts by weight: 40-60 parts of ethylene propylene diene monomer, 20-40 parts of styrene-butadiene rubber, 15-25 parts of polyurethane rubber, 20-30 parts of polypropylene fibers, 4-10 parts of glass fibers, 15-25 parts of alumina whiskers, 4-8 parts of sepiolite powder, 2-4 parts of naphthenic oil, 2-4 parts of a silane coupling agent, 2-4 parts of dimethyl phosphite, 1-2 parts of chlorinated paraffin, 0.5-1.3 parts of dibutyl phthalate, 2-4 parts of phenolic resin, 0.3-0.9 part of sodium persulfate, 1.5-2.5 parts of 1,1,3,3-tetramethylbutyl hydroperoxide and 2-5 parts of an anti-aging agent. The ethylene propylene diene monomer sealing element has good toughness, excellent shock and abrasion resistance, good corrosion and aging resistance, easily available raw materials and low production cost.