636879 - ESAB ST-16 Jumper Liner for 1/16 Wire

Keep Your ST-16 Running Smoothly with a Fresh Jumper Liner

If you are running 1/16" wire through an ESAB ST-16 gun and starting to feel that annoying stutter in the feed, it might be time to check your liner. Specifically, the jumper liner. This short but vital piece of the puzzle—part number 636879—is responsible for guiding that heavy wire through the critical transitions inside your torch. When this liner gets clogged with shavings, kinked, or worn out, your arc stability goes out the window, and you spend more time fighting the gun than laying down beads.

The "Jumper" liner isn't your standard full-length conduit; it's designed to fit a specific section of the ST-16 assembly. Because 1/16" wire is stiff and heavy, it puts a lot of pressure on the liner walls. Over time, this creates grooves and friction points. Replacing this liner restores that smooth, consistent slide you need for a steady arc. Whether you are welding structural beams or heavy equipment, you know that a consistent wire speed is the key to good penetration and a nice stack of dimes. Don't let a cheap or worn-out part compromise your weld quality.

Installation is straightforward for anyone familiar with the ST-16 breakdown. Swapping this out is a quick maintenance task that pays off immediately in smoother operation. This is a genuine ESAB part, so you don't have to worry about trimming it to fit or wondering if the ID is correct. It is built to handle the heat and the grit of the shop floor. Keep a spare in your toolbox so you aren't stuck waiting on parts when you should be burning wire.

Why Welders Choose This Liner:

• Smooth Feeding: Eliminates the drag that causes hand fatigue and erratic arcs.
• Perfect Fit: Drops right into the ST-16 without modification.
• Heavy Duty: Built to handle the stiffness of 1/16" wire without kinking.