The packaging contains MIL SERIES CONNECTOR.There is a CABLE AND PANEL mounting type for the device.Further, there are features such as STANDARD: MIL-DTL-38999, EMI SHIELDED, POLARIZED, to name only a few.
D38999/23HD18XC Features
D38999/23HD18XC Applications
There are a lot of TE Connectivity Deutsch Connectors D38999/23HD18XC Circular Connectors applications.