38V89 - ESAB 38V89 Conduit Liner for ST-21M MIG Guns, 5/64 Inch

Product Overview

The ESAB 38V89 Conduit Assembly is a critical replacement component designed for heavy-duty industrial welding applications. Engineered specifically for use with ESAB's robust line of MIG torches, including the ST-21M, ST-16, and ST-23 series, this conduit ensures the reliable delivery of welding wire from the feeder to the contact tip. It is sized precisely for 5/64-inch (approx. 2.0mm) diameter welding wires, making it an essential part for structural and fabrication environments utilizing larger wire sizes.

Technical Performance

Wire feeding issues are among the most common causes of downtime in MIG welding. A worn or kinked conduit can lead to erratic arc starts, burn-back, and increased friction that strains the wire feeder motor. The ESAB 38V89 is manufactured to strict tolerances to minimize internal friction, allowing the wire to glide smoothly through the cable assembly. Its durable construction resists crushing and kinking, maintaining a consistent internal diameter even when the gun cable is flexed during operation.

Compatibility and Application

This conduit is particularly suited for mechanized and semi-automatic setups using the ST-21M torch. When working with 5/64" flux-cored or solid wires, the internal clearance of the liner is paramount to prevent clogging from shaving accumulation. The 38V89 provides the correct clearance to accommodate the wire while supporting it sufficiently to prevent buckling. Regular inspection and replacement of the conduit are recommended as part of a preventative maintenance schedule to ensure optimal weld quality and equipment longevity.