0366550889 - ESAB PTFE Liner for Aluminum Wire 1.0-1.2mm x 4.5m

Smooth Aluminum Welding with Genuine ESAB Parts

If you have ever struggled with aluminum MIG welding, you know the headache of erratic wire feeding. The wire stops, burns back to the tip, or piles up at the drive rolls in a bird's nest. Often, the culprit isn't your machine or your technique—it's your liner. The ESAB 0366550889 Teflon (PTFE) Liner is the essential upgrade you need when switching from steel to aluminum or stainless steel wire. Standard steel liners are too rough for soft aluminum; they shave off tiny metal flakes that clog the gun and cause friction that stops the wire dead in its tracks.

This high-quality PTFE liner provides a slick, smooth surface that lets soft wire glide effortlessly from the feeder to the contact tip. Designed specifically for 1.0mm to 1.2mm (0.040" - 0.045") wires, it fits perfectly in 4.5-meter (15 ft) ESAB torches, including the popular PSF series. By reducing drag, you get a consistent arc, better bead appearance, and far less downtime clearing jams. It is also an excellent choice for stainless steel wire to prevent cross-contamination from carbon steel liners.

Don't compromise your weld quality with generic or incorrect liners. This is a genuine ESAB part, meaning it is built to the exact specs of your equipment. Installation is straightforward, but remember to follow best practices for Teflon liners, such as ensuring the liner is fully seated and properly trimmed. Whether you are fabricating aluminum boat parts, repairing trailers, or doing precision stainless work, this liner is the key to a frustration-free day under the hood.