A rim of a spoke wheel for tubeless tires including a sealing device (12, 25, 27, 36, 44, 46, 48) arranged in the region of a rim bed (2) in a well (11) of the rim (1) and the rim (1) comprising on both sides of a rim center plane (10) a relief (13) with sealing areas, the relief (13) being provided with two constrictions forming the sealing areas (14, 14') and the sealing device (12, 25, 27, 36, 44, 46, 48) being configured substantially complementary in shape and size to the relief (13) and is arranged therein.