10-825915-016 is a metal protection cap designed for MS and 97 series connectors. It provides protection against live circuits and keeps out dirt and dust when the connector is not in use. The cap features a cadmium olive drab finish and includes a soft rubber disc that seats on the connector shell to form a water-tight joint. Available in configurations for both receptacles (with internal threads) and plugs (with external threads), these caps are commonly used with MS3100, MS3101, MS3102, MS3106, and MS3108 series connectors.