776434-3 is an AMPSEAL 16 connector cap designed for 6-way electrical connections with C key keying and yellow polymer lock ring (PLR) for visual identification. This cap features a reduced diameter seal configuration that provides enhanced environmental sealing and protection against moisture and contaminants in harsh industrial and transportation applications. The connector utilizes 1.58 mm contact size and is manufactured in black with a yellow-coded keying system to prevent incorrect mating. The reduced diameter seal design offers improved reliability in sealed applications while maintaining compatibility with standard AMPSEAL 16 connector systems. This product is commonly used in automotive, industrial control, and commercial transportation systems where reliable, sealed electrical connections are critical.