40V01 - ESAB ST-21M MIG Gun Conduit Liner 5/64in 6ft

Smooth Wire Feeding with the ESAB 40V01 Liner

Is your wire stuttering or dragging? It might be time to replace your gun's liner. The ESAB 40V01 Conduit is the genuine replacement liner for welders using the classic ST-21M MIG gun. Designed specifically to handle heavier 5/64-inch wire, this 6-foot liner restores the smooth, consistent feed you need to lay down perfect beads without frustration.

Over time, liners get clogged with dirt, dust, and metal shavings, or they can become kinked inside the cable. This leads to erratic feeding, burn-backs, and the dreaded "bird's nest" at the feeder. Swapping out your old liner for a fresh 40V01 is one of the cheapest and most effective ways to troubleshoot feed problems. This liner is built tough to guide the wire effortlessly through the torch cable, reducing drag and ensuring your wire hits the puddle exactly when and how you expect it to.

Don't let a cheap consumable ruin your weld quality or slow down your production. Keep your ST-21M torch performing like new with this original ESAB part. Whether you are running flux-cored or solid wire, ensuring your conduit is sized correctly (5/64") and free of debris is key to maintaining a stable arc and high-quality penetration.