The package includes 2 aluminum gaskets with a diameter of 73mm (2.87 inches) and 2 aluminum gaskets with a diameter of 79mm (3.11 inches), plus 8 long valve discs. The dimensions of each component are accurate as shown in the figure. The air compressor gasket is made of high-quality aluminum, providing excellent resistance and sealing performance, helping to prevent gas leakage and supporting stable and efficient operation of the air compressor. These compressor parts are designed to fit air compressor models 68740, 69667, 67501, and other compatible models. This compatibility helps reduce issues caused by incorrect fitment, allowing for straightforward installation and immediate use. The long valve discs are precision-polished using a specialized process to achieve an optimal balance between flexibility and strength. They maintain their shape under high-frequency opening and closing conditions, significantly extending service life even in demanding environments. From the initial design stage, ease of installation was prioritized. Each component’s specifications are precisely controlled, eliminating the need for complex adjustments. Even maintenance personnel with limited experience can perform installation easily, saving time and reducing maintenance costs. A tight seal is formed between the aluminum valve disc and seat, minimizing gas leakage and helping maintain the quality and pressure of compressed air. Please note: When installing the replacement, it is essential to apply a small amount of grease when positioning the lower valve. Failure to do so may result in premature valve failure. Product name: Air Compressor Gasket Product weight: 30g Product size: Small diameter aluminum pad: 73mm / 2.87in Large diameter aluminum pad: 79mm / 3.11in Color: Silver Material: Aluminum Package Contents: 2 x 73mm aluminum gaskets 2 x 79mm aluminum gaskets 8 x long valve plates Note: The package includes only the items listed above. Other products are not included. Note: Lighting effects and differences in display screens may cause slight variations in color between the image and the actual item. Measurement tolerance: +/- 1-3cm.