Preswaging ToolTurnPro Preswaging Tools allow in-field swaging of tube fitting ferrules to tube prior to assembly in the tube fitting. Preswaging is used when it might be difficult to install tube fittings in difficult to reach or confined-space applications.


  • Compact size
  • Durable solid steel body
  • Vise flats
  • Attached cap protects threads from damage
  • Sizes are available for 1/4, 3/8, and 1/2 in. tube fitting sizes.


  • Slip the nut and ferrule(s) over the the end of the tubing,
  • Insert the tubing into the end of the tool.
  • Finger tighten the nut.
  • Use a wrench to tighten the nut 1 ¼ turns.
  • Loosen the nut and remove the tube from the tool. The tubing is now ready to install in the fitting.