025-0480-000 is a plastic protective dust cap designed to cover the coupling and conduit ends of MS connectors, preventing foreign matter accumulation and protecting threaded parts. This cap is made from red polyethylene material and fits shell sizes 16S and 16 for MS102F (MS-Y) style connectors. Key dimensions include a maximum A dimension of 1.161 inches, maximum B dimension of 0.571 inches, and D dimension of 0.919 inches. The dust cap is reusable but is not intended to replace standard aluminum dust caps. It is commonly used in MIL-C-5015 circular connector applications where temporary protection during storage or transport is required.