57N75 - #6 Alumina Cup for Large Gas Lens - 3/8 Inch Bore - 10 Pack

High-Performance Alumina Ceramic Nozzle for Large Gas Lens Applications

The Generic 57N75 Large Diameter Alumina Gas Lens Nozzle is a precision-engineered consumable designed to meet the rigorous demands of industrial TIG welding. Manufactured from high-grade alumina ceramic, this nozzle offers exceptional thermal properties, including high resistance to thermal shock and impact. This material composition ensures that the nozzle maintains its structural integrity even under the rapid heating and cooling cycles typical of high-amperage welding operations. The nozzle features a #6 orifice, corresponding to a 3/8-inch (9.6mm) bore diameter, which is ideal for a wide range of welding applications requiring moderate gas coverage and accessibility.

This component is specifically designed to interface with large diameter gas lens collet bodies (such as the 45V series) used in 17, 18, and 26 series TIG torches. Unlike standard nozzles, this unit is threaded to accommodate the larger footprint of gas lens assemblies, which utilize a mesh screen to laminarize shielding gas flow. The 57N75 nozzle's geometry is optimized to channel this laminar flow effectively over the weld pool, reducing turbulence and minimizing the risk of atmospheric contamination. With a length of 1-7/8 inches (47.6mm), it provides a standard profile that balances gas coverage with joint accessibility.

Technical specifications include:

• Material: Alumina Ceramic (Pink)
• Part Number: 57N75
• Size: #6 (3/8" / 9.6mm)
• Compatibility: 17, 18, 26 Series Torches (with Large Gas Lens)
• Thermal Rating: High amperage capacity consistent with air and water-cooled torch limits

This product serves as a direct replacement for the Weldcraft 57N75 and is compatible with major TIG torch manufacturers. It is an essential component for fabricators seeking to leverage the benefits of large gas lenses, such as extended tungsten stick-out and improved weld quality on materials like stainless steel and aluminum.