CF, UL. UL50086, EN 50086. Extra Flexible Nylon - CF. The CF conduits are extra flexible medium wall black conduits, produced from specially modified polyamide (PA6). The material of the CF conduits is self-extinguishing and free of halogen and cadmium. These Medium-wall conduits are very economical and offer good impact resistance and flexibility. Ideal applications of the medium-wall conduits are in machine building and installation industries. -40°C to +105°C operating temperature Halogen and Cadmium free Self-Extinguishing Pull off Strength >150N Impact Strength >5J