54N17 - Weldcraft 54N17 Alumina Gas Lens Cup #5 (10-Pack)

Technical Overview of the Weldcraft 54N17 Alumina Gas Lens Nozzle

The Weldcraft 54N17 Alumina Gas Lens Nozzle is a premium consumable component designed for professional Gas Tungsten Arc Welding (GTAW) applications. Engineered to interface with gas lens collet bodies, this nozzle plays a critical role in managing shielding gas dynamics at the torch exit. The nozzle features a #5 orifice, corresponding to a 5/16-inch (approximately 8mm) bore diameter, which is ideal for applications requiring a focused gas column for precise weld pool protection. Manufactured from high-purity alumina ceramic, the 54N17 offers exceptional dielectric strength and thermal stability, enabling it to withstand the rapid heating and cooling cycles characteristic of industrial welding environments without succumbing to thermal shock or cracking.

One of the primary engineering advantages of using the 54N17 in conjunction with a gas lens body is the generation of laminar gas flow. Unlike standard collet bodies which can create turbulent gas streams, the gas lens assembly straightens the flow of inert gas (typically Argon or Helium mixtures). This laminar flow significantly reduces the entrainment of atmospheric contaminants such as oxygen and nitrogen into the weld zone. Consequently, operators can achieve cleaner welds with reduced oxidation and porosity. Furthermore, the coherent gas stream allows for extended tungsten electrode stick-out—often up to an inch or more—providing superior visibility and access to deep joints, fillets, and confined geometries where standard nozzles would fail to provide adequate coverage.

This product is fully compatible with the industry-standard 3-series TIG torches, which includes the 17, 18, and 26 series models (air-cooled and water-cooled variants). The standardized threading ensures a secure fit to the gas lens body, preventing gas leakage and ensuring consistent performance. The alumina material also exhibits resistance to spatter adhesion, minimizing maintenance downtime required for cleaning. Supplied in a pack of 10, the Weldcraft 54N17 ensures that fabrication shops and manufacturing facilities maintain a reliable inventory of essential consumables, supporting continuous production and high-quality output in sectors ranging from aerospace to petrochemical piping.