HydlarHydlar ZF Rod and Slab Hydlar® ZF is a blend of DuPont Nylon filled with DuPont Kevlar® Aramid fibers. The Kevlar® filler changes the physical properties, but is not an abrasive as glass fillers. Kevlar® increases the tensile and flexural strength as well as increasing the impact and heat properties. Hydlar® ZF is ideal for structural and wear resistant applications. This material outperforms metals, glass, or other reinforced plastics. Applications: Pulleys Bearings-Heavy Load Casters Wear Plates High Strength Wheels & Rollers Canning Mandrels.