13N13 - Weldcraft 13N13 #10 Alumina Cup for 9/20 Torches (10-Pack)

Weldcraft 13N13 Alumina TIG Nozzle #10 (5/8") - 10 Pack

The Weldcraft 13N13 Alumina Nozzle is a critical consumable for TIG welding professionals utilizing the popular 9, 20, and 25 series torches. This specific nozzle is a size #10, which corresponds to a 5/8-inch (approximately 16mm) orifice diameter. Manufactured from high-grade alumina ceramic, this nozzle is engineered to withstand the intense thermal cycling inherent in Gas Tungsten Arc Welding (GTAW). Alumina is the industry standard material for general-purpose TIG cups due to its excellent balance of impact strength, heat resistance, and electrical insulation properties.

This 10-pack of nozzles is designed to fit standard collet bodies found on air-cooled WP-9 torches and water-cooled WP-20 and WP-25 torches. The 13N13 threads directly onto the 13N-series collet body, providing a secure seal that directs shielding gas (typically Argon or Helium) around the tungsten electrode and the weld pool. The larger #10 orifice is particularly advantageous when welding materials that require a wider umbrella of shielding gas, such as stainless steel or titanium, or when a longer tungsten stick-out is necessary to reach into corners or fillets without compromising gas coverage.

Genuine Weldcraft parts are manufactured to tight tolerances, ensuring that the threads do not bind or cross-thread during installation—a common issue with lower-quality generic ceramics. The consistent wall thickness of the 13N13 ensures uniform heat dissipation, reducing the likelihood of the cup cracking under thermal shock. Whether used in aerospace fabrication, motorsports, or general industrial repair, these nozzles provide the reliability required for high-quality X-ray class welds.

By maintaining a stock of 13N13 nozzles, operators ensure minimal downtime. Ceramic cups are consumable items that eventually wear down from heat stress, spatter accumulation, or accidental breakage. This package of 10 ensures that a fresh, clean nozzle is always available to maintain optimal laminar gas flow and weld quality.