0366549885 - ESAB PSF Steel MIG Liner 0.035" (0.9mm) x 15ft

Restore Precision Feeding with the ESAB PSF Steel Liner

Welders know that the liner is the backbone of the MIG gun's delivery system. The ESAB 0366549885 Steel Liner is the factory-original replacement for ESAB PSF series torches, designed to restore the smooth, consistent wire delivery required for high-quality welds. When a liner wears out or becomes clogged with debris, the resulting friction causes the wire to slip at the drive rolls, leading to sputtering arcs, burn-backs, and frustration. Installing a fresh ESAB steel liner eliminates these variables, allowing you to focus on the puddle rather than fighting the equipment.

This liner is specifically sized for 0.9mm (0.035 inch) steel wires, offering a tight enough tolerance to support the wire column and prevent buckling, yet loose enough to allow free movement. The 4.5-meter length covers most standard torch leads, making it a versatile spare part to keep in your maintenance kit. The steel coil construction is robust and durable, designed to withstand the heat and mechanical stress typical of industrial welding environments.

Installation is straightforward. The liner is inserted through the back of the gun connector and trimmed at the front end to match the specific length of your torch neck and gas diffuser setup. Proper trimming is crucial; a liner that is too short can cause micro-arcing inside the gun, while one that is too long will cause kinking. By choosing the genuine ESAB 0366549885, you ensure the correct outer diameter and fitting geometry for your PSF torch, ensuring a leak-free gas seal and optimal electrical conductivity throughout the system.

Maintenance Tip

To extend the life of your new liner, avoid sharp bends in the gun cable during welding and storage. Use felt wiper pads on your wire prior to entry into the feeder to remove shop dust before it enters the liner.