776531-3 is an AMPSEAL 16 receptacle housing connector designed for industrial and commercial transportation applications. This 8-position connector features yellow color-coded keying (Key C) and a reduced diameter seal configuration, providing environmental protection for sealed connections. The connector accommodates 1.3 mm stamped and formed contacts with wire sizes ranging from 16-20 AWG (1.5-0.5 mm²) and supports insulation diameters of 0.067-0.106 inches (1.7-2.7 mm). The housing dimensions are approximately 1.26 inches in height (32.1 mm), 1.92 inches in width (48.8 mm), and 1.49 inches in length at 90° (37.9 mm). This connector is commonly used in sealed receptacle applications where environmental sealing and keyed mating are essential for reliable performance in harsh industrial environments.