Black knurled aluminium TIG pen for feeding filler wire, 1-3,2mm *new*

With the TIG pen, you make your life easier when working with TIG welding. A welding rod is pushed into the pen, the rod is fed from the roller at the end of the lever, for example by spinning the roller with your index finger. With a pen, you won't burn your fingers (just as easily as without) on that last piece of the welding wire, the control of the filler wire is improved, and when making a long seam, there will be less trouble with the welding wire feeding getting messed up. Excellent doohickey for those who just lack the ability to feed the TIG wire with their fingers.

TIG pen technical details:

• Material:
  • Aluminium
• Compatible TIG welding wire diameter:
  • 1...3,2mm
• Consumable parts possibly requiring replacement in the future:
  • O-ring which acts as a feeder roll tension spring:
    • Thickness:
      • 1,8mm
    • Outer diameter:
      • 13mm
  • Inner feeder roll O-rings:
    • Thickness:
      • 1,5mm
    • Outer diameter:
      • 9mm
  • O-ring material:
    • Stock O-rings are most likely NBR 120°C
      • As an upgrade one could replace them with one of the following:
        • Tetrafluoroethylene-Propylene (FEPM, TFE, TFE/P, AFLAS) 232°C
        • Fluorocarbon (FKM, VITON) 204°C
        • Fluorosilicone (FMQ, FVMQ) 204°C
        • Silicone (VMQ) 204°C