20002070 - Tweco 35-70 Conductor Tube Insulator for No. 3 & 4 MIG Guns

Tweco 35-70 Conductor Tube Insulator (Stock Code: 2000-2070)

The Tweco 35-70 Conductor Tube Insulator is a critical replacement component designed for the maintenance and repair of Tweco No. 3 and No. 4 series MIG guns, as well as select Spray Master assemblies. Identified by the internal stock code 2000-2070, this insulator serves the primary function of electrically isolating the metallic conductor tube (commonly referred to as the gooseneck) from the external environment and the operator. In industrial welding applications, maintaining the integrity of the gun's insulation is paramount to preventing short circuits, equipment damage, and safety hazards.

Manufactured from high-grade, heat-resistant fiberglass reinforced material, the 35-70 insulator is engineered to withstand the extreme thermal cycling and radiant heat generated during high-amperage welding processes (rated for 300A to 400A applications). Unlike inferior aftermarket substitutes, this OEM component ensures precise dimensional tolerances, allowing for a secure fit over the conductor tube without slippage or gaps. The material also exhibits excellent dielectric strength and resistance to degradation from UV radiation and ozone, common in welding environments.

Installation of the 35-70 is straightforward, requiring the removal of the nozzle and contact tip assembly to slide the old insulator off and the new unit on. Regular inspection of this component is recommended as part of a preventative maintenance schedule; cracks, chips, or excessive charring on the insulator can lead to voltage leaks. By utilizing genuine Tweco parts, facilities ensure the longevity of their welding torches and compliance with safety standards. This product is sold individually.