O’Ring Face Seal Fittings (OFS)

O’Ring Face Seal Fittings (OFS)
O’Ring Face Seal Fittings (OFS)
O’Ring Face Seal Fittings (OFS)
O’Ring Face Seal Fittings (OFS)

-2 and -3 Face Seal Connections
1/2" NPT and Pipe Connections
Vacuum - 6000 Psig (413.7 Bar)


Series OFS Face Seal Fittings are bubble tight, zero clearance fittings designed specifically for use in gas fill plant manifolds up to 6,000 PSI. The fittings are constructed of high strength naval brass for high pressure service and to allow for continuous remakes of the Face Seal connection. The fittings use an o’ring face seal connection to provide continuous leak-free operation through a wide range of pressure and temperature conditions. The zero-clearance fitting design allows for easy removal and replacement of system components without the need to disassemble other connections on the line.


  • O’Ring Face Seal for reliable, leak-free connection
  • Naval Brass construction
  • Various Port Configurations offered
  • Zero-clearance design for easy system maintenance
  • Rated to 6,000 PSI
  • Supplied Cleaned for Oxygen Service
  • Compatible with other O’Ring Face Seal Type Fittings

Technical Data

  • Maximum Operating Pressure @ 100°F: 6,000 PSI
  • Temperature Rating: -65° to 375°F (-54° to 190°C) – Seal Material Dependant
  • Leakage: < 0.01 SCCM Helium at 6,000 PSI

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