18CG - 18CG TIG Torch Nozzle Insulator Heat Shield for 17/18/26 Series

Generic 18CG TIG Torch Nozzle Insulator

The Generic 18CG TIG Torch Nozzle Insulator is a critical consumable component designed for the widely used 3 Series TIG torches. This includes the popular air-cooled 17 and 26 series torches, as well as the water-cooled 18 series models. As a direct replacement for the industry-standard part number 18CG (also cross-referenced as 300HS in CK Worldwide systems), this insulator ensures seamless compatibility with equipment from major manufacturers such as Weldcraft, Lincoln Electric, Miller, Profax, and WeldTec.

Functionally, the 18CG insulator serves as a heat shield and electrical barrier between the TIG torch body and the ceramic nozzle (cup). It is manufactured from high-durability, heat-resistant composite materials capable of withstanding the thermal cycles inherent in TIG welding. By creating a seal at the base of the cup, it directs shielding gas flow properly and prevents high-frequency current from arcing to the nozzle or other non-conductive parts of the torch assembly. This specific insulator is designed for use with standard collet bodies. It is important to note that it is not compatible with gas lens setups, which typically require the 54N01 insulator.

Regular inspection and replacement of the nozzle insulator are vital for maintaining weld quality. A cracked or damaged insulator can lead to shielding gas leakage, resulting in porosity in the weld pool, or electrical shorts that can damage the torch head. This generic replacement offers professional-grade performance at a value-driven price point, making it an excellent stock item for maintenance and repair operations.

Technical Specifications

• Part Number: 18CG
• Cross Reference: 300HS
• Torch Compatibility: 17, 18, 26, 150, 210, 300, 510, FL3L, CKM350
• Configuration: Standard Collet Body Setup
• Material: Heat-Resistant Composite