A seal (600, 600') includes an annular body (202, 202') defining a radial direction (R, R'), an axial direction (A, A'), and a circumferential direction (C, C'), and further defines a cross-sectional area (204, 204') including a perimeter (206, 206'). The perimeter (206, 206') includes a first axial extremity (208, 208'), a second axial extremity (210, 210'), an outer radial extremity (212, 212'), and an inner radial extremity (214, 214'). The perimeter (206, 206') also includes a first axially extending surface (232, 232') defining the outer radial extremity (212, 212') and an inner radial convex arcuate surface (306, 306') defining the inner radial extremity (214, 214').