Systems, assemblies, apparatuses, and methods herein may provide an enhanced fluid seal between two components. A seal may include an annular seal body having a groove face, a sealing face opposite the groove face, a first lateral face, and a second lateral face opposite the first lateral face. The groove face may have an at least partially convex groove edge, and the sealing face may have an at least partially concave sealing edge and a protrusion. The first and second lateral faces may be oblique with respect to one another, and the groove face, the sealing face, the first lateral face, and/or the second lateral face may cause the seal to deform in a groove of a first one of the two components when a second one of the two components presses against the sealing face, thereby to enhance the fluid seal between the two components.