1717934-2 is an AMPSEAL 16 connector cap designed for 12-way electrical connections with B key keying and gray polymer locking ring (PLR). This environmentally sealed connector features a reduced diameter seal configuration and reverse mount capability, making it suitable for applications requiring flexible installation orientations. The connector uses 1.58 mm contact size and is constructed with black housing and gray PLR for reliable environmental sealing. It is commonly used in industrial and commercial transportation applications where robust, sealed electrical connections are required, such as automotive wiring harnesses, heavy equipment, and marine systems.