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The Miller 136683 is a head tube/barrel conduit liner designed for Gas Metal Arc Welding (GMAW/MIG) applications. It functions as a low-friction guide path for specific wire diameters traveling through the gun barrel assembly to the contact tip, bridging the structural gap between the gun’s main drive rolls and the contact tip.
Features
Low coefficient of friction for seamless wire feeding
Soft polymer construction prevents shaving or scoring of soft wire alloys
Thermal stability prevents melting or degradation from ambient heat conducted through the gun barrel
Continuous feeding pathway eliminates erratic wire movement and arc stutter
Prevents contact tip burn-backs by establishing low-resistance feeding
Chemical inertness provides a barrier against lubricant and mechanical shaving contamination
Zero scrape geometry prevents micro-shavings from clogging the contact tip aperture
