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 location, every time. IP 68 rated. 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, PG and Metric Cordgrips. Multi-hole glands are only to be used with Heyco Liquid Tight Cordgrips and are not sold separately.