Pro-source 315090013 Tig Torch Back Cap 2.291 in

Product Description

The PRO-SOURCE 315090013 is a short back cap designed for TIG welding torches. The back cap threads onto the rear of the torch body to seal the collet body assembly and retain the tungsten electrode during welding operations. At 2.291 inches in length, this is a short-style cap suited for tight-clearance work where a long back cap would interfere with fixturing or weld access. Welding technicians and fabricators install this cap as a direct replacement when existing caps are cracked, stripped, or lost.

This back cap is intended for use with Series 17, 18, and 26 TIG torches, which are among the most widely used air-cooled and water-cooled TIG torch families in light industrial and fabrication shops. It is a standard consumable replacement kept on hand by welding crews performing routine torch maintenance. The short length makes it a practical choice when working in confined joint geometries or overhead positions where torch clearance is limited.

Key Features

• Short-style cap at 2.291 inches total length for tight-clearance applications
• Compatible with Series 17, 18, and 26 TIG torch bodies
• Seals the collet body and retains the tungsten electrode during operation
• Lightweight at 0.03 pounds, adding minimal mass to the torch assembly
• Direct drop-in replacement for worn or damaged back caps

Compatibility

Designed for use with Series 17, 18, and 26 TIG welding torches as stated by the manufacturer.

Installation Notes

Back caps are installed and replaced by welding technicians during routine torch maintenance. Disconnect the torch from the power source and allow it to cool completely before servicing any torch component. Thread the back cap onto the rear of the torch body by hand until snug, then verify the tungsten electrode is properly seated in the collet before resuming welding operations. Do not overtighten, as back cap threads on TIG torches can be damaged if excessive force is applied.