105Z21 - ESAB HW-8 TIG Torch Nozzle #8 (1/2") Alumina Cup

Premium Gas Coverage with ESAB 105Z21 Nozzle

The ESAB 105Z21 Nozzle is a critical component for welders utilizing the HW-8 TIG torch system. Manufactured from high-quality alumina ceramic, this #8 size nozzle is engineered to withstand the intense thermal cycles inherent in Gas Tungsten Arc Welding (GTAW). The ceramic material is chosen specifically for its high dielectric strength and resistance to thermal shock, ensuring that the nozzle maintains its structural integrity even during prolonged welding sessions at higher amperages. By providing a stable and durable exit point for shielding gas, this nozzle helps prevent atmospheric contamination of the weld pool, which is vital for achieving X-ray quality welds.

With a 1/2-inch (12.7mm) orifice, the #8 cup size offers a balanced gas coverage area suitable for a wide range of joint configurations and tungsten electrode sizes. It is particularly effective for medium-duty applications where a broader gas shield is required to protect the heat-affected zone without consuming excessive amounts of argon or helium. The precision molding of the ESAB 105Z21 ensures a perfect thread fit onto the HW-8 torch body, preventing gas leakage at the connection point that could otherwise lead to turbulence and porosity in the weld metal.

Professional fabricators rely on genuine ESAB consumables to maintain the performance standards of their equipment. Using the correct nozzle for your specific torch model, such as the HW-8, guarantees that the gas lens or collet body functions as intended. The smooth internal surface finish of this alumina cup promotes laminar flow, reducing turbulence and ensuring that the shielding gas blankets the molten puddle effectively. Whether you are welding stainless steel, aluminum, or exotic alloys, the consistency provided by a high-quality nozzle like the 105Z21 is indispensable for defect-free results.

At Josef Gas, we understand that the quality of your consumables directly impacts your productivity and weld quality. This ESAB nozzle represents the reliability and precision engineering that the brand is known for, making it an excellent choice for industrial manufacturing, repair, and maintenance operations requiring the specific form factor of the HW-8 series torches.