375981 - Tweco 375-981 Gas Inlet Fitting for MIG Power Sources

Genuine Tweco 375981 Gas Inlet for MIG Systems

The Tweco 375981 Gas Inlet is a critical replacement component designed to maintain the integrity of your MIG welding shielding gas system. Manufactured by Tweco, a leader in arc welding products, this gas inlet fitting is engineered to precise tolerances to ensure a perfect seal between your gas supply line and the MIG power source or adapter block. In industrial welding environments, maintaining a leak-free gas circuit is paramount for achieving code-quality welds and minimizing gas wastage.

Constructed from high-quality brass, this inlet fitting offers superior resistance to corrosion and mechanical deformation. Brass is the material of choice for gas fittings due to its durability and ability to create tight seals without galling. The 375981 is specifically designed to fit Tweco-style connections, ensuring that technicians and maintenance personnel can perform quick, hassle-free replacements without the need for modifications or thread adapters. Using non-OEM parts in gas delivery systems can often lead to micro-leaks, which introduce atmospheric nitrogen and oxygen into the weld pool, resulting in porosity and compromised joint strength.

This component is essential for MRO (Maintenance, Repair, and Operations) inventories supporting fabrication shops that utilize Tweco MIG guns and power sources. Regular inspection of gas fittings is recommended as part of a preventative maintenance schedule. Over time, threads can become worn or the seating surfaces can degrade due to frequent connecting and disconnecting. Replacing worn inlets with the genuine Tweco 375981 restores the system to factory specifications, ensuring optimal gas flow rates and coverage.

Whether you are refurbishing an older wire feeder or repairing a damaged connection on a production line, the Tweco 375981 provides the reliability professional welders demand. It is compatible with various Tweco MIG configurations, serving as the bridge that delivers the shielding gas necessary for stable arcs and clean welds.