Abstract: The invention includes a device for the manufacture of sandals. The device is formed by a last, covered by the sandal shaft which represents the upper limitation of the cavity of a mold of an injection molding tool. The molding tool is designed for molding a sole onto the shaft in an injection mold cavity, such cavity being formed by lateral parts of the mold and, if necessary, a bottom last portion. The upper edge of the lateral parts of the mold and the complementary contour of the last form a sealing zone for the cavity. In addition, there is provided within the area of the sealing zone, a seal of elastic material, disposed between the last and the lateral parts of the mold. The seal encloses the last completely when the lateral parts of the mold are in their closed position.