Gauges for direct use on oxidizing
media should be specially cleaned. Gauges for oxygen service
should be ordered to variation X6B and will carry the
ASME required dial marking “USE NO OIL” in red letters.
Gauges for direct use on other oxidizing media may be
ordered to variation X6W. They will be cleaned but carry no
dial marking. PLUS!™ Performance gauges or Halocarbon
filled gauge or diaphragm fill is required for use with oxidizing
media; order variation XCF.