The 0413-003-1605 is a thermoplastic sealing plug designed for Size 16 cavities in DEUTSCH STRIKE series connectors. This plug is used to seal unused connector cavities and maintain seal integrity by preventing contaminates from entering the connector. The sealing plug features a large diameter end that is held away from the connector during installation, and it is forced into the cavity with downward pressure until it contacts the rear grommet. This product is part of the DEUTSCH Common Contacts accessory line and is essential for maintaining environmental sealing in applications where not all connector cavities are populated with wires. It is commonly used in industrial and commercial transportation systems where connector reliability and protection from dirt, moisture, and other contaminates are critical.