Assessment on hermetic property and mechanical compatibility of various groove-gasket sealing designs for solid oxide fuel cell stack

► The profile curve of the deformed seal is satisfactorily validated against macroscopic image. ► The rectangular seal contact surface does not change with temperature. ► The contact surface for U and triangular grooves increases with temperature. ► U groove design can maintain sufficiently high contact stress over entire temperature range. ► Maximum deformation of seal material was observed along the U-shape wall surface.