54N01 - 54N01 TIG Torch Gas Lens Insulator for 17, 18, 26 Series (2-Pack)

Upgrade Your TIG Setup with the 54N01 Gas Lens Insulator

If you are looking to take your TIG welding results to the next level, switching to a gas lens setup is one of the most effective upgrades you can make. However, to make that switch on your 17, 18, or 26 series torch, you need the right parts. The Weldcraft 54N01 Gas Lens Insulator is the essential "adapter" that makes this possible. Standard insulators won't fit the wider profile of a gas lens collet body, so swapping in the 54N01 is the first step in assembling your high-performance front end.

Why go through the trouble? A gas lens replaces the standard collet body and uses a mesh screen to smooth out the flow of argon, creating a laminar stream rather than a turbulent cloud. This allows you to extend your tungsten stick-out further—up to an inch in some cases—giving you better visibility into tight corners and deep joints without losing gas coverage. The 54N01 insulator sits securely between your torch body and the gas lens, ensuring that everything lines up perfectly and that the electrical current stays where it belongs.

This package contains two insulators, which is great because these small parts can sometimes be dropped, lost, or eventually worn out after long-term exposure to reflected heat. Made from durable, high-temperature material, these insulators are designed to resist the thermal shock of starting and stopping welds repeatedly. They fit a wide variety of torches, so whether you are running a classic WP-17 air-cooled torch in your garage or a heavy-duty WP-18 water-cooled rig in a production shop, these insulators will fit right in.

Installation is simple: just unscrew your old nozzle and collet body, remove the standard white gasket (18CG), and slide the 54N01 onto the torch head. Then, thread in your new gas lens collet body and attach the appropriate nozzle. It’s a small, inexpensive part that unlocks the full potential of your welding machine, helping you lay down cleaner, more colorful beads on stainless steel and other sensitive materials. Don't let a missing insulator hold up your project; keep a pack of 54N01s in your toolbox.