This sealing plug is an optional part of the Deutsch DTM Series of electrical connectors. Sealing Plugs are only needed if a Plug or Receptacle Housing has more positions than contacts. For any position that is not filled with a contact, a Sealing Plug is required in order to maintain the IP68 rating.
Sealing Plugs are designed to fit both the Plug housing or the Socket housing (there is not a "plug" version and a "socket" version). Sold individually.
Example: For 9 connections, use a 12-position Housing, 9 Contacts, and 3 Sealing Plugs.
Make a dust cap to protect an unused connector by filling a housing with Sealing Plugs and no contacts!