615-0620-15 - MK Products Python Teflon Conduit Liner Assembly, 15 ft

MK Products 615-0620-15 Python Conduit Assembly (15 ft)

The MK Products 615-0620-15 is a premium replacement conduit assembly designed specifically for the renowned Python push-pull MIG gun system. Engineered to meet the rigorous demands of industrial aluminum welding, this 15-foot conduit is constructed from high-grade Teflon. In the world of aluminum fabrication, wire feeding issues are the primary cause of downtime; using the correct liner material is critical. Teflon (PTFE) offers an exceptionally low coefficient of friction, allowing soft aluminum wires (such as 4043 or 5356 alloys) to glide smoothly from the feeder to the contact tip without the drag that causes buckling or "bird-nesting."

This assembly is not just a generic tube; it is an OEM part manufactured by MK Products to exact specifications. It includes the main 15-foot Teflon tube along with a specific 7.32-inch Teflon inlet line, ensuring a complete path for the welding wire. The precise dimensions of the inlet line are crucial for maintaining wire alignment as it enters the gun assembly, reducing wear on drive rolls and preventing metal shavings from clogging the liner. When welding with a push-pull system like the Python, the synchronization between the cabinet motor and the gun motor relies on a consistent wire path; this conduit provides exactly that stability.

Regular maintenance of your MIG gun's liner is essential for weld quality. Over time, even Teflon liners can accumulate aluminum oxide dust or become kinked, leading to erratic arc starts and unstable wire feed speeds. Replacing your old conduit with the MK 615-0620-15 restores your equipment to factory performance levels. This product is compatible with standard Python configurations and is a vital spare part for any shop specializing in aluminum fabrication, signage, or aerospace welding applications.

Key Benefits:

• Optimized for Aluminum: Pure Teflon construction prevents wire contamination and friction.


• Perfect Fit: Designed exclusively for MK Python guns, ensuring seamless installation.


• Complete Assembly: Comes with the necessary inlet line for a full replacement.


• Durability: Resists heat and wear, prolonging the service life of your consumables.