I-Polyamide (PA), eyaziwa kakhulu ngokuthi i-Nylon, ibonisa amandla aphezulu emishini, ukuqina okuhle kakhulu, ukumelana nokuguga okuhle, kanye nezinga lokushisa eliphezulu lokugoba. Iphinde inikeze ukumelana namakhemikhali okuhle emafutheni, ama-grease, kanye ne-fuel, kanye nokuthambisa okuphezulu kwendawo kanye ne-coefficient ephansi yokungqubuzana. Izinhlanganisela ze-PA zinezici zokucubungula eziyingqayizivele futhi zisetshenziswa kabanzi ekukhiqizeni izingxenye zobunjiniyela ezisebenza kakhulu ezinhlelweni zezimboni.

Ukuguqulwa kwe-Nylon ngokuhlanganiswa ne-glass fiber, ama-flame retardants, izinto zokugcwalisa amaminerali, ama-impact modifiers, kanye nama-solid lubricants kukhiqiza ukuthuthukiswa okukhulu ezicini zempahla eyisisekelo futhi kunikeza izinhlanganisela ezisekelwe ku-PA izici ezilandelayo:

Ukuqina namandla avelele (ikakhulukazi nge-glass fiber reinforcement), ukumelana nomthelela ophezulu (ngisho nasemazingeni okushisa aphansi), ukumelana nokugoba okuhle kanye nokukhathala, ukuzinza okushisayo okuhle kakhulu (kufika ku-220°C HDT kumamaki aqiniswe), ukumelana nokuguga okuphezulu nokungqubuzana okuphansi, ukuzinza okuhle kwezilinganiso (ngezinto zokugcwalisa amaminerali), isiphetho esihle kakhulu, ukumelana namakhemikhali nama-hydrocarbons nama-solvents, ukumelana nokulandelela okuphezulu (CTI 600V), izici ezinhle zokushelela, kanye nokuziphatha okuhle kokuqina ngokushisa. Amamaki avimbela umlilo atholakala ezinhlelweni ezine-halogenated nezingena-halogen, ngezigaba ze-UL94 V-2 noma i-V-0 (amamaki agunyazwe yi-UL), i-glow wire flammability index (GWFI) kufika ku-960°C, kanye nezinga eliphansi lokubhema ezinhlelweni zikagesi.