54N19-11 - 54N19 #11 Alumina Gas Lens Cup for 17/18/26 Torches

Industrial Grade Alumina Gas Lens Nozzle

The Generic 54N19-11 is a premium replacement nozzle cup designed for professional TIG welding applications. Manufactured from high-grade alumina ceramic, this consumable is engineered to withstand the high thermal cycles associated with industrial welding environments. It is specifically configured to fit the "Gas Lens" series of collet bodies used on 17, 18, and 26 series TIG torches (also known as WP-17, WP-18, and WP-26). The use of alumina ceramic ensures excellent electrical insulation and resistance to thermal shock, reducing the frequency of cracking and replacement during heavy use.

This specific nozzle is a Size #11, which corresponds to an exit orifice diameter of 11/16 of an inch (approximately 17.5mm). The larger bore size is critical when using gas lenses, as it complements the laminar flow generated by the mesh screen in the collet body. By providing a wider column of shielding gas, this cup effectively protects the weld pool from atmospheric contamination, even when the tungsten electrode is extended further than standard setups allow. This makes it an essential component for MRO operations involving stainless steel, titanium, or other reactive metals where gas purity at the arc is paramount.

Compatibility is key in maintenance and repair operations. The 54N19 follows industry-standard sizing, making it interchangeable with parts from major manufacturers such as Weldcraft, CK Worldwide, Miller, and Lincoln Electric, provided the torch setup utilizes the standard gas lens system (45V series collet bodies). It is not compatible with standard non-gas-lens collet bodies or stubby gas lens kits unless specified for the 54N series.