IP 67 sealed backnut.
The print indicates usage with the female plug.

Clipper Series

Plastic industrial connectors which provide sealing to IP67. The system offers connector shells with a retention plate system, allowing easy insertion/extraction of the crimp contacts without tooling. Contacts to be purchased separately. The cable mount sockets are able to accept straight cable clamps, conduit adaptors or sealing glands giving great flexibility in usage. For added safety the connectors are designed to be scoop proof: in that they may be coupled and uncoupled without the risk of damaging contacts, even if blind mating is necessary. High density formats are available using 1mm contacts.