Tweco 1420-1003 Nylon Conduit Liner 15 Ft Aluminum Mig

Product Description

The TWECO 1420-1003 is a nylon conduit liner engineered for use with aluminum welding wire in MIG welding applications. Built with a Teflon conduit construction, this liner resists the friction and galling that aluminum wire creates when running through standard steel liners. At 15 feet in length and rated for wire sizes from 0.030 to 3/64 inches, it fits standard cable lengths used on professional-duty MIG guns. Amperage compatibility spans 180 to 250 amps, making it suitable for mid-range to heavy-duty aluminum MIG welding tasks. A brass alloy machined stop on the back end secures the liner in position and carries a rolled-stamped part number for fast field identification.

This liner is intended for use in MIG welding setups handling aluminum wire, where low-friction conduit material is required to prevent wire feed issues such as birdnesting or erratic wire delivery. It is designed for use with TWECO Professional Choice MIG guns in the 1 and 2 series, as well as the Spray Master MS250 series MIG guns. Typical install environments include fabrication shops, welding contractors, and maintenance facilities performing aluminum structural or sheet metal work. The part is sold individually.

Key Features

• Teflon conduit construction reduces friction for smooth aluminum wire feed
• Compatible with 0.030 to 3/64 inch aluminum welding wire
• Rated for 180 to 250 amp MIG welding applications
• 15 ft liner length fits professional-duty MIG gun cable assemblies
• Brass alloy machined stop on back end for secure liner positioning
• Part number rolled-stamped on brass stop for easy field identification

Compatibility

Designed for use with TWECO Professional Choice MIG guns in the 1 and 2 series and the Spray Master MS250 series MIG guns. Intended for use with aluminum welding wire only.

Installation Notes

Liner installation and replacement should be performed by a qualified welding technician or MIG gun service professional. Disconnect and power down the welding machine before removing or installing any liner. Ensure the liner is fully seated against the brass stop before securing the gun neck and drive roll assembly. Do not use this liner with steel or flux-core wire, as it is engineered specifically for aluminum wire feed.

Technical Specifications

• Wire Size Range: 0.030 to 3/64 inches
• Amperage Rating: 180 to 250 amps
• Liner Length: 15 ft
• Stop Material: Brass alloy
• Conduit Material: Teflon (nylon conduit)
• Weight: 0.34 pounds

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1420-1003