The K Series consists of watertight, self-latching circular connectors designed for outdoor applications, featuring push-pull mating and 360° electromagnetic shielding. The series supports coaxial, hybrid coaxial and low voltage, and hybrid coaxial with high voltage, fluidic, or fiber optic contacts, with up to 10 coaxial contacts per connector. Models are available as straight or elbow plugs, free or fixed sockets, and flanged variants with screw or nut mounting. All connectors are rated IP68 when properly mated and assembled with compatible cable, and IP66 otherwise. Housing materials include chrome-plated brass and PEEK insulators, with collet types C or K for cable clamping up to 10.5 mm diameter. The series maintains the LEMO Push-Pull self-latching system and alignment key options to prevent mis-mating.