54N16L - Weldcraft 54N16L Long Alumina Gas Lens Cup #6 (10-Pack)

Technical Overview of the Weldcraft 54N16L Alumina Nozzle

The Weldcraft 54N16L is a specialized Alumina Gas Lens Long Nozzle designed to enhance the operational capabilities of standard TIG welding setups. Engineered for use with 17, 18, and 26 series TIG torches (including Miller A-Series and W-Series equivalents), this nozzle integrates seamlessly with gas lens collet bodies to provide laminar gas flow. The nozzle features a #6 orifice, corresponding to a 3/8-inch (9.5mm) diameter, which is optimal for medium-amperage applications requiring precise shielding gas distribution. The elongated form factor of the 54N16L distinguishes it from standard nozzles, specifically addressing the need for deep-joint access where standard cups would cause obstruction.

Material composition is a critical factor in the performance of TIG consumables. This nozzle is manufactured from high-purity Alumina ceramic, a material chosen for its exceptional dielectric strength, high thermal conductivity, and resistance to thermal shock. In high-duty cycle welding environments, the ability of the nozzle to dissipate heat effectively prevents premature failure and cracking. Furthermore, the alumina surface resists the adhesion of weld spatter, maintaining a clean orifice for consistent gas velocity and coverage. The interaction between this nozzle and a gas lens body significantly reduces Reynolds numbers in the shielding gas stream, minimizing turbulence and ensuring an inert atmosphere around the tungsten electrode and weld pool.

The 54N16L is an essential component for precision fabrication where geometric constraints limit torch angle and proximity. By allowing for a greater tungsten stick-out—often up to an inch or more depending on gas flow rates—without compromising shielding integrity, it enables welders to execute critical root passes in pipe welding or fillet welds in recessed corners. This component is fully compatible with the industry-standard 3-Series consumable ecosystem, ensuring broad interchangeability across various torch brands that adhere to the 17/18/26 form factor.