Duratec fittings are supplied in tough nickel plated brass and utilize unique double O-ring seals to ensure long term joint integrity. These mechanical connections require no special tools or training and can be installed in less than 1 minute. Applications include plant air, inert gas distribution, robotic installations, manufacturing hand tool operation, semiconductor tool hook up, valve actuation — control systems, microbulk inert gas delivery systems and manual and automated welding operations. NOTE: D1 connections connect directly to Duratec