0700300505 - ESAB Yellow PTFE Liner for 1.2mm-1.6mm Aluminum Wire

High-Performance PTFE Liner for Soft Wire Applications

The ESAB PTFE Liner (SKU: 0700300505) is a critical component for industrial MIG welding operations involving soft filler metals. Engineered from high-quality Polytetrafluoroethylene (PTFE), commonly known as Teflon, this liner is specifically designed to address the tribological challenges associated with feeding aluminum and stainless steel wires. Unlike coiled steel liners, which can abrade soft wires and cause significant friction, the smooth internal surface of this PTFE liner ensures a consistent, low-drag feed path. This is essential for maintaining stable arc characteristics and preventing mechanical failures such as bird-nesting at the drive rolls.

This particular liner is color-coded Yellow, indicating its compatibility with wire diameters ranging from 1.2mm (0.045") to 1.6mm (1/16"). Proper sizing is paramount in aluminum welding; a liner that is too large allows the wire to buckle under compression, while one that is too tight increases drag. The 1.2-1.6mm tolerance of this ESAB liner provides the optimal balance of support and clearance for standard heavy-duty aluminum applications. It is compatible with a wide range of ESAB MIG torches and is intended to be trimmed to length during installation to ensure perfect fitment from the feeder mechanism to the contact tip.

In professional fabrication environments, the integrity of the wire delivery system is often the deciding factor in weld quality. Aluminum wire, being inherently softer and more prone to deformation than carbon steel, requires a conduit that minimizes contact resistance. This ESAB PTFE liner not only facilitates smoother feeding but also reduces the accumulation of metal shavings and debris within the torch cable, thereby extending the service life of the torch and reducing downtime for maintenance. It is an indispensable consumable for any welder working with the ESAB PSF or MXL series torches on non-ferrous projects.