57N57 - Replacement 100 Mesh Gas Lens Screens (3-Pack)

Precision Gas Flow Control

The ESAB 57N57 Screen 100 Mesh (3) is a specialized maintenance component designed for the refurbishment and assembly of TIG welding gas lenses. Gas lenses are critical for establishing a laminar flow of shielding gas, which provides superior coverage compared to standard collet bodies. At the heart of this function is the mesh screen stack, which acts as a diffuser to straighten the gas turbulence into a coherent column. Over time, these screens can become clogged with metal vapor, spatter, or atmospheric contaminants, degrading performance. This pack of three 100-mesh screens allows for the precise replacement of the filtration layer, restoring the gas lens to optimal specifications.

Constructed from high-grade stainless steel, these screens offer excellent resistance to oxidation and heat cycling, common in high-amperage TIG applications. The 100-mesh density is engineered to provide the ideal balance between gas restriction and flow straightening, ensuring that the shielding gas exits the nozzle in a smooth, non-turbulent stream. This allows for greater tungsten stick-out, improved visibility of the weld pool, and reduced risk of porosity in the weld metal. These screens are compatible with standard gas lens designs that allow for internal component replacement.

For industrial MRO operations, stocking replacement screens like the 57N57 is a cost-effective strategy. Instead of discarding expensive gas lens bodies due to minor screen fouling, technicians can simply replace the mesh insert. This product ensures that your welding equipment maintains the high standards required for code-quality welds in aerospace, petrochemical, and sanitary piping applications.