Adaptor - Tube Weld JIC x TWF - SAE Specification

A Tube Weld Adaptor (JIC x TWF) under SAE specification is a specialized hydraulic fitting used to connect a JIC 37° flare fitting to a Tube Weld Fitting (TWF) end, typically for permanent, high-pressure installations.

• JIC Side:

  • Thread Type: 37° flare, conforming to SAE J514 / ISO 8434-2
  • Seal Type: Metal-to-metal seal via the 37° flare
  • Common Sizes: 1/8" to 2" (dash sizes -02 to -32)
  • Pressure Rating: Up to 5,000 psi for smaller sizes 

• TWF Side (Tube Weld Fitting):

  • Designed for butt-welding to hydraulic tubing
  • Provides a permanent, leak-free connection
  • Typically used with seamless steel tubing per SAE J524 or DIN 2391

• Temperature Range:

  • Carbon steel: -20°C to +120°C
  • Stainless steel: -60°C to +200°C

Applications:

• High-pressure hydraulic systems
• Industrial and mobile equipment
• Marine and offshore installations
• Systems requiring vibration resistance and permanent tube connections