The engine must be designed to ensure that the engine combustion chamber openings are properly sealed. For this purpose, the material of the engine block, the fastener, the lubrication of the fastener, the magnitude and order of the fastening moment, and the design of the gasket must be carefully chosen and determined. The PF pressure film produced by Kumlong International Limited can measure the dynamic pressure distribution state and provide designers with accurate and real-time pressure size and distribution data to make the best choice and decision.