MATHESON Select Small Gas Lens Alumina Nozzles (Cups) for TIG Torches 9 - 20 - 22
Alumina Nozzles are generally the most common type, made from alumina oxide. They are highly resistant to impact and heat. Alumina makes a good electrical insulator and resists spatter build-up. Alumina does not perform as well as lava in applications where excessive heat is reflected back to the nozzle.