5 in. Die cast Brass case with natural Brass finish. Cleaning for Oxygen Service O2 is available only for dry or HL Halocarbon filled gauges.8mm Brass Threaded Orifice.
FKM o-ring seal and PTFE back-up ring below the stem threads to protect from corrosion and galling; PTFE or Graphite packing optional certain NPT sizes only..