Kurwego rwohejuru rwo kurinda ruswa, hejuru yicyuma cyose gishobora gushyirwaho - mubisanzwe hamwe na chrome ikomeye cyangwa umukara wa chrome. Dutanga kandi chrome yumukara hamwe na fluoroplastique (Teflon, cyangwa ubwoko bwa PTFE), itanga ndetse no kurinda ruswa neza.