34015 - ESAB Medium Back Cap for 17/18/26 Series TIG Torches (2-Pack)

Upgrade Your TIG Setup with Genuine ESAB Parts

Keep your TIG torch running smoothly with the ESAB 34015 Medium Back Cap, specifically designed for the popular 17, 18, and 26 series torches. Every TIG welder knows that the back cap is more than just a lid for your torch; it is the anchor of your entire electrode assembly. If your back cap is cracked, worn, or has a dried-out O-ring, you risk losing gas coverage and experiencing frustrating arc wander. This genuine ESAB replacement part ensures that your tungsten stays exactly where you set it and your shielding gas goes exactly where it's needed—on the puddle.

Why choose a medium back cap? It is the "Goldilocks" of TIG accessories. The long back cap is great for using brand-new, full-length tungsten, but it can get in the way when you are working in restricted spaces or trying to manipulate the torch at awkward angles. The short button cap is perfect for tight spots but requires you to cut your tungsten down to nubs, which is wasteful and time-consuming. The Medium Back Cap gives you the best of both worlds. It is short enough to stay out of your way during most bench work and out-of-position welds, yet long enough to accommodate a decent length of tungsten, saving you trips to the grinder.

This package contains two (2) medium back caps, so you can keep one on your rig and one in your toolbox for backup. Nothing stops a job faster than dropping a back cap and cracking it, or discovering the O-ring has split. With this 2-pack, you are covered. These caps are made from durable, heat-resistant materials that resist cracking even when dropped on concrete floors. They feature precision threading that screws smoothly into HW-17 (air-cooled), HW-18 (water-cooled), and HW-26 (air-cooled) torch bodies. Don't settle for generic knock-offs that might not seal correctly; stick with the brand that pioneered TIG welding.

Whether you are a hobbyist working on a weekend project or a professional pipe welder, the integrity of your equipment defines the quality of your work. The ESAB 34015 ensures that your torch performs as intended, providing the consistent gas flow and electrode stability required for X-ray quality welds. Grab a pack today and ensure your torch is ready for whatever the job throws at it.