MS27488-16-2 is a sealing plug designed for size 16 contacts in MIL-DTL-38999 Series III TV military-grade connectors. This accessory is used to seal unused contact cavities in connector inserts, maintaining the environmental integrity of the connector assembly. The sealing plug has a commercial equivalent part number of 10-405996-162. It is commonly used in aerospace, military, and industrial applications where reliable environmental sealing and connector protection are essential for maintaining system performance in demanding conditions.