CK 8A5 Alumina TIG Cup #5 (A53N25) for 8 Series Torches

Reliable Shielding for Micro TIG Applications

Elevate your welding setup with the CK Worldwide 8A5 Alumina Cup, a robust #5 nozzle built to handle the daily challenges of professional TIG welding. If you operate an 8 Series torch—such as the versatile CK24 or the heavy-duty water-cooled CK180—this is the essential replacement cup for your consumable kit. Equivalent to the A53N25 reference number, this nozzle provides a 5/16-inch bore that delivers smooth, laminar gas coverage for standard tungsten stick-outs and typical joint geometries, ensuring your weld pool remains protected from oxidation.

The difference with CK alumina cups lies in their material composition and build quality. These nozzles are crafted from a high-grade alumina ceramic formulation that offers superior resistance to thermal shock compared to lower-quality alternatives. When you are executing a critical root pass or working on expensive alloys, you need a cup that won't crack under rapid temperature changes. The 8A5 is engineered to maintain its structural integrity even under high-amperage loads, providing peace of mind that your shielding gas flow will remain consistent throughout the weld.

Sized at 5/8-inch in length, the 8A5 offers a balanced profile that provides excellent visibility of the puddle without adding unnecessary bulk to the front of the torch. This is particularly important when using 8 Series torches, which are often selected for their compact size to access tight spaces in pipe fabrication, manifold assembly, and aerospace components. This cup complements the torch's low-profile design, allowing you to maneuver effectively while maintaining adequate gas shielding. The alumina material also resists spatter adhesion, keeping the orifice clear and reducing the frequency of interruptions to scrape off buildup.

Installation is quick and secure, threading perfectly onto your torch body or collet body. Using genuine CK Worldwide consumables guarantees that tolerances are exact, preventing gas leaks that could compromise your weld quality. Whether you are a seasoned pipe welder, a motorsports fabricator, or a precision TIG specialist, keeping a healthy stock of 8A5 cups ensures you are always prepared to lay down clean, defect-free beads. Trust in the durability and performance of CK Worldwide to keep your arc stable and your welds bright.