Conforms to CE and VDE. 300 / 500 V CF9 control cable. Igus CF9 Chainflex control cable for heavy duty applications. Chainflex cables have been designed for durability and to reduce downtime due to cable failure. Features and Benefits. Ultra-flexible control cable for unshielded cable chains used in various applications PVC-free and halogen free Excellent ultraviolet resistance, wear resistance, and oil resistance The sheath forms a high-pressure extrusion that bites the gaps Can also be used outdoors for processing machines, cranes, and low-temperature refrigeration, etc.