45V25 - 45V25 Medium Gas Lens 1/16" (1.6mm) for 17/18/26 Series Torches (2-Pack)

Precision Gas Shielding for TIG Welding

The 45V25 Medium Gas Lens is a critical component for TIG welders seeking to optimize their shielding gas coverage and weld quality. Designed as a direct replacement for standard collet bodies, this gas lens features a multi-layer fine mesh screen composed of stainless steel. This screen acts as a diffuser, transforming the turbulent gas flow from the torch into a coherent, laminar stream. By rectifying the gas column, the 45V25 significantly reduces the mixing of atmospheric air with the shielding gas, thereby minimizing the risk of porosity and oxidation in the weld pool. This specific model is engineered for 1/16-inch (1.6mm) tungsten electrodes and is fully compatible with industry-standard 17, 18, and 26 series TIG torches (including WP-17, WP-18, and WP-26 models).

One of the primary technical advantages of using the 45V25 gas lens is the ability to extend the tungsten electrode farther beyond the nozzle cup without compromising shielding integrity. In standard setups, extending the tungsten too far results in turbulent flow and poor coverage. However, the stable column of gas provided by this lens allows for a stick-out of up to an inch in draft-free conditions, providing the operator with superior visibility and access to tight joints or deep corners. This is particularly beneficial in complex fabrication tasks where torch angle and accessibility are limited.

Constructed from durable brass and high-quality mesh, this component is built to withstand the thermal cycling inherent in TIG welding. It serves as the interface between the collet and the ceramic cup, requiring compatible gas lens nozzles (typically the 54N series) rather than standard nozzles. The 45V25 is an essential upgrade for precision applications such as aerospace, motorsports, and sanitary piping, where weld aesthetics and metallurgical purity are paramount. This package contains two (2) gas lenses, ensuring you have a spare on hand for critical projects.

Installation is straightforward: simply remove the standard collet body and nozzle, install the 45V25 gas lens with a matching collet, and attach the appropriate gas lens cup. The improvement in arc stability and puddle control is often immediately noticeable, making it a preferred choice for both professional fabricators and serious hobbyists.