Abstract: A sealing device according to at least one embodiment includes not less than three arc-shaped fins arranged in an axial direction. The arc-shaped fins include: a first fin which is one of two outermost fins located on an outermost side in the axial direction; a second fin disposed adjacent to the first fin in the axial direction; and at least one third fin disposed opposite to the first fin across the second fin in the axial direction. It is preferable that the third fin is disposed to be inclined with respect to a radial direction such that a tip end portion is located on a side of the first fin in the axial direction relative to a base end portion, and the third fin has a larger inclination angle than the first fin or the second fin with respect to the radial direction.

Abstract: Highly durable radial tires, particularly highly durable radial tires hav a plurality of carcass plies of organic fiber cords and used for light trucks as well as heavy duty vehicles wherein at least one of the plies is composed of polyamide cords having superior heat resistance in a rubber and the remaining plies or ply are composed of polyester cords.