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Two copper brass gas lenses, .040 inch, pack of two

Miller - Weldcraft

Miller - Weldcraft 45V42 Gas Lens Copper Brass .040 PK2

SKU CH-M42X-5ESZA

Copper-brass gas lens for .040 in tungsten fits Miller 9, 20, 24 and 25 series TIG torches, two per pack

  • Product typeTools
  • Gas-lens design improves shielding-gas coverage for cleaner welds
  • Copper-brass construction resists heat and spatter during extended use
  • .040-inch bore matches 0.040-inch wire for precise gas flow
  • Compatible with WP-9, WP-20 and WP-24 series torches for versatile fit
  • Two-pack supplies a spare lens to reduce downtime on the job

Miller Weldcraft 45V42 Gas Lens

This Miller Weldcraft 45V42 gas lens is a copper and brass consumable designed for TIG welding torches. It fits a wide range of Miller and Weldcraft torch models including Series 9, 20, 24 and 25. The lens is sold as a pack of two for workshop readiness.

.040 inch bore for focused shielding

The .040 inch bore size suits precision TIG applications requiring concentrated gas coverage on thin materials. It provides effective shielding for standard duty cycles on compatible air- and water-cooled torches. Larger joint preparations or higher amperage settings may exceed the gas flow capacity of this bore diameter.

Copper brass construction resists heat

The copper brass body conducts heat away from the tip during extended welding sessions. This material choice helps maintain consistent gas lens performance without warping under normal operating temperatures. The lens contains chemicals known to the State of California to cause cancer and reproductive harm.

How it compares

Measured against everything we stock in Welding Equipment & Positioners, at today’s prices. Recalculated every night.

Price $23.99
Cheaper than about 70% of the 1,978 comparable items (median $50.99).

Specifications

Product
Brand nameMILLER ELECTRIC
Product typeTools

Questions about this item

Will the 45V42 gas lens fit my WP-9 and WP-24 series torches?

Yes, the lens is compatible with WP-9, WP-9F, WP-9FV, WP-9V, WP-24, WP-24F, WP-24FV and WP-24W models listed in the specifications.

How can I verify the 45V42 gas lens is installed correctly on my torch?

Confirm the copper-brass lens seats fully in the torch head and the .040 inch bore aligns with your tungsten size for proper gas coverage.

What comes in the PK2 pack and do I need separate collets for .040 inch tungsten?

The pack contains two 45V42 gas lenses; collets and collet bodies for .040 inch tungsten are not included and must be purchased separately.

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