Abstract: The invention relates to a tool (1) for applying liquid agent such as, for example, an insulating foam, an adhesive, or paint to the mantle surface of a circular-cylindrical object (10), comprising a tool head (2) having an axially through hole (3) with a substantially circular cross-section. The tool head (2) comprises an inner flange (8), an outer flange (16), a distribution chamber (12) running around the inner flange (8) and that comprises at least one outlet (13; 23; 33) distributed around the through hole (3). An asymmetrical restriction is arranged at the outlet (13) so that the outlet is restricted where the pressure is as highest (14). The invention also relates to a method for applying an agent around a circular-cylindrical object (10) with the tool (1).

Abstract: The invention relates to a tool (1) for applying liquid agent such as, for example, an insulating foam, an adhesive, or paint to the mantle surface of a circular-cylindrical object (10), comprising a tool head (2) having an axially through hole (3) with a substantially circular cross-section. The tool head (2) comprises an inner flange (8), an outer flange (16), a distribution chamber (12) running around the inner flange (8) and that comprises at least one outlet (13; 23; 33) distributed around the through hole (3). An asymmetrical restriction is arranged at the outlet (13) so that the outlet is restricted where the pressure is as highest (14). The invention also relates to a method for applying an agent around a circular-cylindrical object (10) with the tool (1).