* This device is designed to attach and secure cables to control boxes, distribution panels, electrical appliances, machines, etc.* This product is also used for sealing cables passing through bulkheads or gland plates.* Cable glands may be used on all types of electrical power, control, instrumental data and telecommunications cables.* Ratchet type lock nut ensures a firm grip on the cable.* Tight buna seal makes, it resistant to most liquids. (salt water, weak acids, gasoline, alcohol, oil, grease, and common solvents)