A firmly held electrode and evenly distributed gas: that is how a good TIG bead begins. Kit of 3 diffusers (collet bodies) for ST17 and ST26 TIG torches, the part that houses the electrode collet and distributes the gas inside the ceramic cup.
A diffuser of the right size keeps the tungsten firm and centred, and distributes the argon evenly over the weld pool. Choose the size of your tungsten electrode: 1.6, 2.0, 2.4 or 3.2 mm.
✅ Key benefits
Precise hold: the electrode does not wobble or become contaminated by touching the workpiece.
Even gas flow: distributes the shielding gas inside the cup.
Four sizes: from 1.6 to 3.2 mm for every electrode diameter.
Pack of 3: spares for several working days.
🏗️ What it's for
ST17 and ST26 TIG torches.
TIG welding of steel, stainless steel and aluminium.
Boilermaking, stainless steel and maintenance workshops.
Changing electrode diameter on the torch.
📋 Technical features
Part: TIG diffuser (collet body)
Contents: 3 diffusers
Sizes: 1.6 · 2.0 · 2.4 · 3.2 mm
Compatibility: ST17 and ST26 TIG torches
How to choose the size
The diffuser size must match the diameter of the tungsten electrode and the electrode collet. If you switch to a thicker electrode, change the collet and diffuser as well.
💡 Vetonek tip: always use a collet and diffuser of the same size as the electrode: if they do not match, the tungsten moves, becomes contaminated and the arc turns unstable. Keep a set of each size you use regularly.
Frequently asked questions
What does the diffuser do in a TIG torch?
It holds the electrode collet and distributes the shielding gas inside the ceramic cup.
What size do I need?
The same as the diameter of your tungsten electrode: 1.6, 2.0, 2.4 or 3.2 mm.
Which torches is it for?
For ST17 and ST26 TIG torches.
How many diffusers are included?
Each kit includes 3 diffusers in the chosen size.
Do I also need collets?
Yes, the collet and diffuser must be the same size as the electrode. You will find ST17/ST26 electrode collets in the same shop.
Frequently Asked Questions
What does the diffuser do in a TIG torch?
It holds the electrode collet and distributes the shielding gas inside the ceramic cup.
What size do I need?
The same as the diameter of your tungsten electrode: 1.6, 2.0, 2.4 or 3.2 mm.
Which torches is it for?
For ST17 and ST26 TIG torches.
How many diffusers are included?
Each kit includes 3 diffusers in the chosen size.
Do I also need collets?
Yes, the collet and diffuser must be the same size as the electrode. You will find ST17/ST26 electrode collets in the same shop.
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