KP4746-1 - Lincoln Electric KP4746-1 Short Back Cap for 17, 18, 26 Series TIG Torches

Optimize Torch Accessibility with Lincoln Electric Consumables

The Lincoln Electric KP4746-1 Short Back Cap is an essential consumable designed for professionals utilizing the PTA-17, PTA-18, and PTA-26 series TIG torches. As a critical component of the TIG torch assembly, the back cap performs two primary functions: it applies pressure to the collet to lock the tungsten electrode in place, and it creates an airtight seal at the rear of the torch head to prevent shielding gas leakage. This specific model features a "short" profile, significantly reducing the overall length of the torch assembly compared to standard long back caps.

Manufactured to Lincoln Electric's rigorous standards, this back cap is constructed from high-impact, heat-resistant polymers capable of withstanding the thermal cycles inherent in industrial welding environments. The threaded connection is precision-molded to ensure smooth installation and removal, minimizing the risk of cross-threading or seizing. Included with the cap is a high-quality O-ring that ensures the integrity of the shielding gas envelope, preventing atmospheric contamination that could lead to weld defects such as porosity or oxidation.

For industrial supply managers and procurement specialists, stocking the KP4746-1 is vital for supporting fabrication teams working on complex assemblies. Its compatibility with the widely used 17, 18, and 26 series platforms makes it a versatile inventory item. By providing a solution for restricted-access welding, this component enhances the operational flexibility of the welding workforce, ensuring that even the most difficult joints can be reached without compromising torch angle or gas coverage.

Whether used in aerospace, automotive manufacturing, or general pipe fabrication, the Lincoln Electric Short Back Cap delivers the reliability expected from OEM parts. It serves as a direct replacement for the industry-standard 57Y04 part number, ensuring broad compatibility across various torch brands that adhere to international TIG torch standards.