Aramid is the monomer from which polyaramide can be manufactured by polycondensation. Polyaramid is chemically related to nylon (polyamide). The difference from nylon concerns the presence of an aromatic group (benzene ring) in the chain, where nylon has a single set of carbon atoms. Polyaramid is characterised by particularly high tensile strength, low weight, small elongation and resistance to relatively high temperatures. Aramid fibres are used in bullet and fragment-proof vests, towing and hoisting cables, fire-resistant clothing and strong and lightweight composites, among others. for more info;