18CG - Weldcraft 18CG TIG Torch Nozzle Insulator / Heat Shield (2-Pack)

18CG TIG Torch Heat Shield and Insulator (2-Pack)

Optimize your TIG torch assembly with the industry-standard 18CG Nozzle Insulator. This critical consumable is designed to fit the "3 Series" family of TIG torches, which encompasses the popular 17, 18, and 26 models found in fabrication shops worldwide. Whether you are operating a heavy-duty water-cooled 18 series torch or a portable air-cooled 17 series, the 18CG provides the necessary interface between your collet body and the torch head.

Universal Compatibility and Performance
While branded as Weldcraft (a Miller Electric brand), the 18CG design is universal. It is fully compatible with equivalent torch models from brands such as CK Worldwide, Lincoln Electric, WeldTec, and Profax. This cross-compatibility makes it a versatile stock item for shops with mixed equipment fleets. The insulator is crafted from durable, high-temperature resistant materials designed to withstand the radiant heat of the welding arc without melting or becoming brittle prematurely.

Protection and Maintenance
The primary function of the 18CG is to insulate the electrically hot components of the torch from the nozzle and the operator's hand position, while also sealing the gas passage to prevent atmospheric contamination of the weld pool. A cracked or damaged insulator can lead to gas turbulence, poor shielding coverage, and even arc instability. Regular inspection and replacement of the nozzle insulator are recommended as part of routine torch maintenance. Signs of wear include discoloration, chipping, or a loose fit against the cup.

Value and Convenience
Supplied in a pack of two, this product offers excellent value for maintenance and repair operations (MRO). Having a backup insulator in your welding kit prevents downtime caused by accidental breakage during cup changes or drops. Installation is straightforward: simply remove the back cap, collet, and collet body, slide the old insulator off, and seat the new 18CG against the torch face before reassembling the front-end parts.