ʻO NOMEX® a me KEVLAR® nā polyamides aromatic a i ʻole aramid i hoʻomohala ʻia e DuPont.Loaʻa ka huaʻōlelo aramid mai ka huaʻōlelo aromatic a me ka amide (aromatic + amide), ʻo ia ka polymer me nā paʻa amide he nui e hana hou ana i ke kaulahao polymer.No laila, ua hoʻokaʻawale ʻia i loko o ka hui polyamide.
Loaʻa iā ia he 85% o kāna mau paʻa amide i hoʻopili ʻia me nā apo ʻala.ʻElua ʻano nui o nā aramids, hoʻokaʻawale ʻia ʻo meta-aramid, a me para-aramid a ʻo kēlā me kēia o kēia mau pūʻulu ʻelua he mau waiwai like ʻole e pili ana i ko lākou mau hale.