57Y02 - Weldcraft 57Y02 Long Back Cap for 17/18/26 Series Torches (2-Pack)

Weldcraft 57Y02 Long Back Cap (2-Pack)

The Weldcraft 57Y02 Long Back Cap is a standard replacement consumable designed for the widely used 17, 18, and 26 series TIG welding torches. This component plays a vital role in the Gas Tungsten Arc Welding (GTAW) process by securing the tungsten electrode within the collet body and providing the necessary insulation to prevent electrical shorts against the torch head. The long design of this back cap is specifically engineered to accommodate full-length (7-inch) tungsten electrodes, allowing welders to maximize the lifespan of their tungsten before needing to switch to medium or short caps as the electrode is ground down.

Manufactured from high-quality, heat-resistant phenolic materials, the 57Y02 is built to endure the high temperatures associated with continuous TIG welding operations. It features a precision-molded thread that ensures a smooth fit into the torch body. Crucially, each back cap comes pre-installed with a durable O-ring. This O-ring creates a hermetic seal at the rear of the torch, preventing shielding gas from escaping and ensuring that the full flow is directed through the nozzle to protect the weld pool. Leaking back caps are a common source of porosity in welds, making the integrity of this component essential for quality control.

This product is supplied as a package of two, providing an immediate backup for critical welding tasks. It is compatible with a broad range of torch models including the WP-17 air-cooled, WP-18 water-cooled, and WP-26 air-cooled torches, as well as equivalent models from other major manufacturers like CK Worldwide and Radnor. Whether for industrial fabrication, pipe welding, or maintenance repair operations, the Weldcraft 57Y02 ensures your equipment performs at its peak.