The Porter Cable Z-D24819 Air Compressor Head Gasket is used to maintain proper sealing within the pump assembly to support consistent air pressure from the start. This replacement gasket sits between the cylinder head and valve plate, creating a secure barrier that prevents air leaks during compression. By ensuring the chamber remains tightly sealed it allows the compressor to build ... https://www.wholetoolbox.com/porter-cable-z-d24819-air-compressor-head-gasket