This gasket sits in the nozzle/air cap area and provides a proper seal so air pressure goes where it should—through the gun’s passages—rather than leaking out at the nozzle assembly.

If you’re noticing inconsistent atomisation, a faint air hiss around the front end, or difficulty maintaining stable spray patterns, replacing the nozzle gasket is one of the quickest, most cost-effective fixes. A Proper Seal Means A Cleaner Spray Pattern Spray guns rely on controlled airflow.