Bentley-Harris® Expando® products are tough, lightweight over sleeves used to protect cable assemblies, hoses and wire harnesses from chafing, cutting and abrading. The open-weave construction of Expando products enables each size to expand to fit several application shapes and sizes. This open-weave construction also makes them highly flexible and resistant to trapping water, heat and humidity. - Expando® 686DM is a protective over sleeve designed for mechanical protection in temperature extremes and hostile environmental conditions.