Adaptor - TEE - SAE Specification - JIC (M) x JIC (M) x UNO (M)

A TEE adaptor with JIC (M) x JIC (M) x UNO (M) threads is a specialized hydraulic fitting that combines SAE JIC 37° flare male threads with a UNO (Unified National O-Ring) male thread, also known as SAE ORB (O-Ring Boss). Here's a detailed breakdown:

Adaptor - TEE - SAE JIC (M) x JIC (M) x UNO (M)

Thread Types

• JIC (Joint Industry Council) Male:

  • Standard: SAE J514 / ISO 8434-2
  • Thread Form: UNF (Unified National Fine)
  • Seal Type: 37° metal-to-metal flare
  • Common Sizes: 1/4", 3/8", 1/2", etc.

• UNO (Unified National O-Ring) Male (also called SAE ORB):

  • Standard: SAE J1926-1
  • Thread Form: UNF
  • Seal Type: O-ring seated against a flat face
  • Used for: Leak-proof, high-pressure hydraulic connections

Design & Configuration

• Shape: T-shaped fitting
• Ends:
  • Two JIC male ends (typically inline)
  • One UNO/ORB male branch (perpendicular)
• Purpose: Integrates systems using JIC flare fittings with ORB O-ring boss ports

Materials

• Carbon steel (zinc-plated) – durable and corrosion-resistant
• 316 stainless steel – for high-corrosion environments
• Brass – for lower pressure or non-corrosive systems

Applications

• Hydraulic systems in industrial, agricultural, and construction equipment
• Fuel and oil lines
• High-pressure fluid transfer
• Cross-standard integration (e.g., JIC hoses to ORB ports)

Installation Tips

• JIC ends: No sealant needed; seal is via 37° flare.
• UNO/ORB end: Requires an O-ring and seals against a flat face; do not overtighten.
• Always verify thread compatibility and torque specs.