As a special type of aviation hydraulic pipe joint. a beam seal comprises two annular sealing areas. This paper presented a leakage model for an annular sealing area based on a developed three-dimensional percolation grid model and the porous medium theory. Both average contact pressure and true contact width of the beam seal were simulated using the finite element method. https://cuttingedgecutleryco.shop/product-category/tactical-pen/