Makita 421576-8 Valve Sheet for Siding Nailer AN611

The Makita 421576-8 Valve Sheet is a genuine Original Equipment Manufacturer (OEM) replacement part used in Makita nailers. This part, also referred to as a "cylinder seal," is a plastic gasket that sits between the head valve and the cylinder separator. Its primary function is to regulate airflow and pressure within the tool to ensure consistent and efficient operation. This part should be replaced if it becomes broken or if the tool is leaking air. It is compatible with Siding Nailer AN611 and Coil Nailer AN621.