KP2018-3B1 - Lincoln Electric #6 Alumina Gas Lens Cup for PTA-9/20 Torches

Better Visibility and Cleaner Welds

Take your TIG welding setup to the next level with the Lincoln Electric KP2018-3B1 Alumina Gas Lens Nozzle. If you are tired of struggling with turbulence in your shielding gas or poor visibility due to a short tungsten stick-out, switching to a gas lens setup with this #6 cup is the solution. This nozzle is designed to work seamlessly with gas lens collet bodies, smoothing out the flow of argon to create a stiff, laminar column of protection around your weld puddle.

The Number 6 size (3/8 inch) is a versatile "daily driver" for many TIG welders. It offers a perfect balance between coverage and accessibility, allowing you to get into tighter corners than larger cups while still providing ample shielding for standard joints. Because the gas flow is more efficient, you can often extend your tungsten electrode further out from the nozzle—sometimes up to an inch depending on conditions—giving you a much clearer view of the arc and the puddle without sacrificing shield quality.

Durability is built right in. Made from high-quality alumina ceramic, this pink nozzle stands up to the intense heat of the TIG arc without cracking or crumbling prematurely. It threads easily onto your gas lens collet body and stays secure while you work. It is specifically designed to fit Lincoln's popular PTA-9 (air-cooled) and PTA-20/PTW-20 (water-cooled) torches, making it a direct replacement for your worn-out consumables.

Whether you are welding stainless steel exhaust systems, aluminum intake manifolds, or performing critical root passes on pipe, the KP2018-3B1 helps you achieve that stack-of-dimes look with less effort. The consistent gas coverage reduces oxidation and porosity, meaning less time grinding and cleaning and more time welding. Add this essential consumable to your kit and experience the difference a quality gas lens nozzle makes in your arc stability and weld appearance.