Heavy-duty, environmentally protected FX and MX. The FX-HD has a diecast zinc shell and one piece neoprene jacket with sealing lips, to protect the shell and latch mechanism from ingress of dirt and moisture into the connector body. The MX-HD has a stainless steel shell, which when mated with FX-HD offers protection to IP65 (IEC44). The gland is brass, has internal sealing O-rings, with a polyurethane strain relief also providing sealing.
Note: The X-HD series female connectors do NOT mate with D series male panel connectors. They only mate with P and PR-HD series, and seal with PR-HD series.