TIG Welder Back Caps

TIG welder back caps screw into the back of the torch head, tightening the collet against the collet body to secure the tungsten electrode. They also seal the back of the torch to prevent gas leakage. Back caps are available in different lengths—long, medium, and short (often called "button" caps)—to suit different welding environments. A long back cap is standard and accommodates a full-length tungsten, while short caps are essential for fitting the torch into confined spaces where a long cap would be an obstruction.

Using the correct back cap allows you to use tungsten electrodes of varying lengths and maximizes the versatility of your TIG torch. Button caps require the tungsten to be cut down significantly but allow the torch to fit into extremely tight spots, such as pipework or inside corners. Ensuring the O-ring on the back cap is in good condition is crucial to preventing air from being sucked into the shielding gas stream.

Premier Welding stocks a full range of back caps compatible with WP17, WP18, WP26, and other common torch series. Our specialists can assist you in outfitting your torch for any access requirement. We are committed to providing practical solutions for difficult welding tasks. Explore the TIG Welder Back Caps category to enhance your torch's flexibility.