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

Technical Overview of the Weldcraft 54N16L Alumina Nozzle

The Miller Weldcraft 54N16L is a specialized Alumina Gas Lens Long Nozzle designed to enhance the operational capabilities of standard TIG welding setups. Engineered for the 3-Series consumable system, this nozzle is fully compatible with 17, 18, and 26 series TIG torches, as well as their modern equivalents such as the A-150, A-200, A-250, W-350, W-400, and W-500 models. The nozzle features a #6 orifice, translating to a 3/8-inch (9.5mm) bore diameter, which is optimized for medium-amperage applications requiring precise gas coverage.

Manufactured from high-grade alumina ceramic, the 54N16L offers exceptional thermal properties, including high resistance to thermal shock and low thermal conductivity. This ensures the nozzle maintains structural integrity even under the rapid heating and cooling cycles characteristic of industrial TIG welding. The material also exhibits high impact resistance, reducing the frequency of replacement due to accidental drops or collisions in rugged workshop environments. The ceramic composition is formulated to resist spatter adhesion, minimizing the downtime required for cleaning and maintenance.

The defining technical feature of the 54N16L is its extended length. When paired with a gas lens collet body, this long nozzle facilitates a significantly extended tungsten stick-out—often up to an inch or more depending on gas flow rates and joint configuration. The gas lens assembly creates a laminar gas flow, reducing turbulence and allowing the shielding gas to remain coherent over a longer distance. This capability is critical for welding in deep crevices, inside corners, or restricted piping clusters where standard nozzles cannot reach. This product is supplied in a package of 10, ensuring consistent supply for production environments.

Compatibility Note: This nozzle is specifically designed to thread onto gas lens collet bodies (such as the 45V series). It is not compatible with standard collet bodies. Operators must ensure their torch setup includes the appropriate gas lens insulator and collet body to utilize this nozzle effectively.