Abstract: A sealing device for use between two faces utilizing gasket means for making contact with the faces. The gasket means includes at least one gasket member having a flat surface. The sealing element also includes a grooved element which accomodates the gasket means such that the gasket member fits into a groove of substantially curvilinear cross sectional configuraton. Initially, one of the flat surfaces of the gasket member extends beyond the confines of the groove but deforms to move into the groove upon the application of force directed to bring the faces together.