42.0300.0821 - Fronius Style Ceramic Gas Cup 8.4mm for TTG/TTW Torches

Keep Your Arc Stable with the Right Fronius Cup

Every TIG welder knows that the front end of the torch is where the magic happens, and the condition of your gas cup can make or break a weld. This replacement ceramic nozzle, part number 42.0300.0821, is built to keep your Fronius rig running smoothly. Whether you are running a portable AccuPocket 1600 on a job site or sitting at a bench with a TransTig machine, this cup fits your TTG or TTW series torch perfectly. It’s designed to handle the heat of long beads and high amperage without cracking under pressure, giving you one less thing to worry about while you are under the hood.

With an 8.4mm opening, this nozzle provides a focused stream of argon to shield your puddle. It’s the ideal size for general-purpose TIG work, giving you enough coverage for standard joints while remaining compact enough to see around. Visibility is key in TIG welding, and the 33mm length of this cup strikes a good balance—it's short enough to get you close to the work for maximum control, but long enough to protect your tungsten stick-out. If you are welding stainless or aluminum, you know how important consistent gas coverage is to prevent oxidation and sugaring; this fresh cup ensures your gas flow stays laminar and smooth.

Installation is a breeze. The threaded base screws securely onto your torch head, ensuring there are no leaks that could suck in air and ruin your weld appearance. It fits a wide range of Fronius torches, including the air-cooled TTG1200A and TTG2200A, and the water-cooled heavy hitters like the TTW2500A and TTW3000A. If you've noticed your current cup is chipped, cracked, or caked in spatter that won't scrape off, it's time to swap it out. A damaged cup can cause turbulence in your shielding gas, leading to wandering arcs and dirty welds.

Don't settle for generic parts that might not thread correctly or could shatter the first time they get hot. This nozzle is made to the specs your machine was designed for. It’s a small part, but it plays a huge role in the quality of your finished product. Keep a few of these in your consumables kit so you are never stuck waiting on parts when you have a deadline to meet. Clean welds start with clean consumables, and this ceramic nozzle delivers the performance professional welders expect from the Fronius brand.