08Z40 - ESAB 08Z40 Gas Nozzle #8 (1/2 Inch ID) for ST/MT MIG Guns

Reliable Gas Coverage for ESAB MIG Guns

The ESAB 08Z40 Gas Nozzle #8 is a critical consumable designed to maintain the efficiency and quality of your welding operations. Engineered specifically for use with ESAB and legacy L-Tec MIG guns—including the popular ST-16, ST-23, MT-200, MT-250, and MT-400 series—this nozzle ensures that your shielding gas is directed precisely over the weld pool. With a 1/2-inch (12.7 mm) inside diameter, the #8 size is the industry standard for a wide range of medium-duty fabrication tasks, offering a balanced flow of gas that protects molten metal from atmospheric contamination.

Constructed from high-grade copper alloy, the 08Z40 nozzle is built to withstand the intense heat and spatter associated with continuous MIG welding. Its robust wall thickness helps dissipate heat effectively, preventing premature deformation and extending the service life of the part. In industrial environments where downtime equals lost revenue, using genuine ESAB consumables ensures that your equipment fits correctly every time, reducing troubleshooting time related to gas leaks or poor arc stability.

Proper maintenance of your MIG gun's front-end consumables is essential for producing X-ray quality welds. A worn or clogged nozzle can lead to turbulent gas flow, resulting in porosity and weak joints. By replacing your old nozzle with a fresh ESAB 08Z40, you restore the laminar flow required for smooth, spatter-free welding. Whether you are welding mild steel, stainless, or aluminum, this nozzle provides the consistency professional fabricators demand.

Key Specifications

• Part Number: 08Z40


• Size: #8 (1/2" / 12.7 mm ID)


• Material: Copper Alloy


• Compatibility: ST-16, ST-23, MT-200, MT-250, MT-400