Kevlar(aramid) Soft/Stiff Cord Application. Application: V-belt, Poly-V belt. Aramid fiber cord with high mechanical strength and thermal/chemical resistance, is to improve the long-term cost benefits. Aramid fiber is widely applied in various market sectors: automotive industry(such as: tires, hose, transmission belt), aviation/aerospace, civil engineering and architecture, leisure activites(such as yacht), occupational protective clothing(such as plates/fire/cut resistant clothing), fiber/cable, friction and sealing materials and so on.