347707-1 is a silicon rubber wire seal designed for use with Econoseal III 250 Series wire-to-wire connectors. This orange-colored seal accommodates wire ranges of 0.5-1.5 mm² (20-16 AWG) with wire insulation diameters of 1.6-2.4 mm (0.063-0.094 inches). One wire seal is required per contact to ensure proper sealing performance. The seal is manufactured from silicon rubber material, providing reliable environmental protection for connector applications in automotive and industrial environments.