Heyco® Break-Thru™ Skinned-Over glands offer the flexibility to use fewer of the available holes while still providing a liquid tight seal around the conductors. Consult Heyco for additional Skinned-Over gland number, size, and hub configurations. Heyco® Multi-hole glands provide the widest range of conductor through-hole size and number configurations, many of which are agency approved. See the tabular charts for specific approvals for specific parts. These approvals are not "global" or implied approvals; they are both real and part specific. Integral Sealing Ring ensures a superior seal at the clearance or threaded mounting hole locaton, every time. IP 68 rated. Approved for NEMA 4, 4X, 6 and 6P applications. Cordgrips are made of nylon construction with TPE sealing glands that resist salt water, weak acids, gasoline, alcohol, oil, grease, and common solvents. For body part dimensions see NPT Cordgrips. Multi-hole glands are only to be used with Heyco Liquid Tight Cordgrips and are not sold separately