A closure including a shell having a base wall with an axial outer surface and an undersurface, an annular skirt around a periphery of the base wall, and circumferentially spaced securement elements extending radially inwardly from the skirt. A gasket is carried by the shell, and has a base surface in contact with the undersurface of the base wall of the shell and an oppositely disposed sealing surface. An elongated flexible member extends between the sealing surface of the gasket and the axial outer surface of the shell and around a portion of the skirt circumferentially between the securement elements.