The 225-0070-000 is a sealing plug used to seal unused contact cavities in environmental connectors. This red plug is designed for size 20 contacts and is constructed from a durable thermoplastic material. It features a primary diameter (Dimension A) of 0.085 inches and a length (Dimension C) ranging from 0.755 to 0.805 inches. This component is essential for maintaining the environmental seal integrity in BKAE, BKAD, and BKAF series ARINC 600 connectors by preventing ingress of moisture and contaminants into open cavities.