This unique housing to housing adapter incorporates additional o-rings for sealing out moisture and a monel mesh gasket for superior RF integrity. A total of five EP o-rings prevent moisture migration at all adapter interfaces. Unlike other housing to housing adapters, this design prevents moisture from entering the coupling nut as well as the connector/equipment interface. Thirty-six locking teeth allow for easy alignment of equipment and prevent loosening of the coupling nut.
See the Multicom Trunk Connectors here