61N40 - ESAB 61N40 Contact Tube 1/16" for ST-12/ST-23 MIG Guns (5-Pack)

Genuine ESAB 61N40 Contact Tubes for Reliable MIG Welding

Maintain the performance of your welding equipment with the ESAB 61N40 Contact Tube. Designed specifically for heavy-duty industrial applications, this contact tube is engineered to accommodate 1/16-inch (1.6mm) welding wire. As a critical component in the MIG welding process, the contact tube is responsible for transferring the welding current to the wire as it passes through the gun. Using genuine ESAB parts ensures that this transfer is efficient, stable, and consistent, reducing the likelihood of arc instability or burn-backs.

This product comes in a convenient pack of 5, allowing professional welders and fabrication shops to keep essential consumables on hand. The 61N40 is widely compatible with a range of classic and modern ESAB (formerly L-Tec or Linde) MIG guns, including the popular ST-12, ST-16, ST-23, and the MT-200, MT-250, and MT-400 series. Its precise bore diameter ensures that the wire feeds smoothly without excessive drag, while still maintaining the necessary electrical contact.

Constructed from high-quality copper alloy, these contact tubes offer excellent thermal conductivity and durability. In high-amperage welding scenarios, inferior tips can overheat and deform, leading to wire jamming and downtime. ESAB's manufacturing standards ensure that the 61N40 withstands the rigors of continuous welding. Whether you are working on structural steel, heavy equipment repair, or general fabrication, choosing the right contact tip is the first step toward a high-quality weld bead.

At Josef Gas, we recommend checking your MIG gun model and wire diameter carefully before ordering. This specific part is tailored for 1/16" wire, a size often used for high-deposition welding on thicker materials. By replacing your contact tips regularly, you prevent the common issues associated with keyholing (wear at the tip exit) and ensure your gas coverage and arc focus remain optimal.