Adaptor - TEE - SAE Specification - ORFS (M) x ORFS (M) x ORFS (F)

A TEE adaptor with ORFS (M) x ORFS (M) x ORFS (F) configuration is a high-integrity hydraulic fitting designed for leak-free, high-pressure applications. This setup is compliant with SAE J1453 standards and is commonly used in systems where vibration resistance and fluid containment are critical.

Adaptor - TEE - SAE ORFS (M) x ORFS (M) x ORFS (F)

Thread Type: ORFS (O-Ring Face Seal)

• Standard: SAE J1453
• Thread Form: Straight UN/UNF threads
• Seal Type: O-ring face seal
  • Male ORFS: Flat face with an O-ring seated in a groove
  • Female ORFS: Flat face that compresses the O-ring for a leak-proof seal

Design & Configuration

• Shape: T-shaped fitting
• Ends:
  • Two male ORFS ends (typically inline)
  • One female ORFS branch (perpendicular)
• Purpose: Allows integration of a female-threaded ORFS hose or tube into a male-to-male ORFS line

Materials

• Carbon steel with zinc-trivalent plating – for corrosion resistance 
• 316 stainless steel – for corrosive or sanitary environments
• Brass – for lower pressure or non-corrosive systems
• O-Ring Materials: Typically Buna-N (NBR) or Viton (FKM) depending on fluid compatibility

Applications

• Hydraulic systems in:
  • Construction and agricultural machinery
  • Industrial automation
  • Marine and aerospace
• High-pressure fluid transfer
• Vibration-prone environments where leak resistance is critical

Installation Tips

• Ensure the O-ring is clean, seated properly, and undamaged.
• Do not use thread sealant—the seal is made at the face, not the threads.
• Tighten to manufacturer-recommended torque to ensure proper compression of the O-ring.