Chikhalidwe chachikulu cha EPDM ndi kuthekera kwake kopambana kukana okosijeni, ozoni ndi kukokoloka.Chifukwa mphira wa ternary ethylpropylene ndi wa banja la polyene (PA66) wa hydrocarbon, uli ndi mawonekedwe abwino kwambiri a vulcanization.Mwa mphira onse, EPDM ili ndi mphamvu yokoka yotsika kwambiri.Imatha kuyamwa ma fillers ambiri ndi mafuta osakhudzidwa kwambiri ndi katundu.Kotero inu mukhoza kupanga mankhwala opangira mphira omwe ali otsika mtengo.