DIFFUSER NOZZLE WT17/18/26
Improve shielding gas distribution with this 42 mm ceramic gas lens cup for WT17, WT18 and WT26 TIG torches. Available in several diameters, it fits onto a gas lens diffuser to provide a consistent gas flow suited to a wide range of professional TIG welding applications.
Get register and you will earn 17 points/€0.85
(Each €1.00 spent = 1 point, 1 point = €0.05 discount).Your cart will total 17 points that can be converted into a voucher of €0.85.
Availabilities for Pick-up in store :
DIFFUSER NOZZLE WT17/18/26
This gas lens cup for WT17, WT18 and WT26 TIG torches is designed for professional welders looking for a reliable component compatible with gas lens diffusers. Its ceramic construction is suited to the demanding conditions found in fabrication workshops, industrial maintenance operations and on-site TIG welding work.
With a length of 42 mm, the cup provides accurate positioning around the tungsten electrode and guides the shielding gas towards the welding area. When installed on a gas lens diffuser, it supports an even gas flow around the weld pool and helps create suitable working conditions for applications requiring controlled gas coverage.
Several diameters are available, allowing the welder to select the cup according to torch configuration, joint accessibility and the required shielding gas coverage. The 6.3 mm diameter version corresponds to the number 4 gas lens cup.
Technical specifications
- Product type: TIG torch gas lens cup
- Material: ceramic
- Length: 42 mm
- Installation: fits onto a gas lens diffuser
- Compatibility: WT17, WT18 and WT26 TIG torches
- Application: professional TIG welding
Available diameters
| Diameter | Product designation | Compatibility |
|---|---|---|
| Ø 6.3 mm | No. 4 gas lens cup D6.3 | WT17 / WT18 / WT26 |
| Ø 8.0 mm | Ceramic gas lens cup D8.0 | WT17 / WT18 / WT26 |
| Ø 9.5 mm | Ceramic gas lens cup D9.5 | WT17 / WT18 / WT26 |
| Ø 11.0 mm | Ceramic gas lens cup D11.0 | WT17 / WT18 / WT26 |
| Ø 12.5 mm | Ceramic gas lens cup D12.5 | WT17 / WT18 / WT26 |
| Ø 17.5 mm | Ceramic gas lens cup D17.5 | WT17 / WT18 / WT26 |
Why choose this TIG gas lens cup?
The range of available diameters makes it easy to adapt the torch setup to the workpiece, joint geometry and required shielding gas coverage. Compatibility with WT17, WT18 and WT26 torch series also simplifies consumable management in workshops operating several TIG torch models.
Select the diameter suited to your welding application and equip your TIG torch with a ceramic cup designed for accurate installation on a gas lens diffuser.
Data sheet
| Torch consumables | Buses-diffuseurs |
|---|---|
| Torch type | TG 17/18/26 |


