121667-0023 is an individual wire seal designed for use with ITT Cannon APD Series ISO 15170 connectors. This seal is specifically engineered to accommodate wire insulation diameters in the range of 1.9–2.1 mm and is color-coded yellow for easy identification during assembly. The seal provides environmental protection and strain relief at the cable entry point of the connector, ensuring reliable sealing and preventing moisture and contaminant ingress. It is compatible with 6/7-way, 19-way, 37-way, and 51-way APD connector configurations. This component is essential for maintaining connector integrity in harsh environments such as military/aerospace, industrial instrumentation, and oil & gas applications where environmental sealing is critical.