MW18-CG - 18CG TIG Torch Insulator Gasket

Reliable TIG Torch Insulation

The MW18-CG Cup Gasket is a fundamental component for maintaining the efficiency and safety of your TIG welding setup. Designed to fit the widely used 17, 18, and 26 series TIG torches, this insulator sits between the torch body (or collet body) and the ceramic gas cup. Its primary function is to create a gas-tight seal, ensuring that your shielding gas flows directly through the nozzle to the weld pool without leaking at the connection point. This is critical for preventing atmospheric contamination and porosity in your welds.

Manufactured from durable, high-temperature resistant materials, the MW18-CG withstands the intense radiant heat generated during the welding process. It also serves as an electrical insulator, preventing the electrically "hot" torch components from arcing to the nozzle or other nearby surfaces. This specific gasket is designed for use with standard collet bodies. If you are experiencing inconsistent gas coverage or notice that your ceramic cups are not seating correctly, a worn or cracked cup gasket is often the culprit.

Regular inspection of your torch consumables is key to high-quality fabrication. Over time, the heat cycles can cause these gaskets to become brittle, discolored, or cracked. Replacing your cup gasket with the MW18-CG restores the integrity of your torch head, ensuring smooth gas flow and stable arc performance. Whether you are using an air-cooled WP-17 or WP-26, or a water-cooled WP-18, this part provides the precise fit required for professional results.

Key Benefits

• Universal Fit: Compatible with all major brands of 17, 18, and 26 style torches.


• Seal Integrity: Prevents costly gas waste and weld defects caused by leaks.


• Durability: Resists thermal shock and degradation in demanding environments.