Abstract: Apparatus for cooling liquids, especially lubricating oil for internal combustion engines or heat engines, etc., including a heat exchanger formed by at least one tube for circulating said liquid to be cooled, immersed in a cooling liquid. The exchanger is connected to the outside circuit by connectors passing through the wall of the container of the cooling liquid. These connectors are formed in two parts, one of which projects externally, said parts being so shaped that when assembled they jointly form an annular cavity which surrounds the edge of the opening formed in the container wall; the volume of said cavity diminishes gradually when said two parts are joined together whereby to confine and tighten a flexible seal placed within said cavity.

Abstract: Radiator for an air-conditioning system of an automobile.The stack of fins for the heating of the circulating air is traversed by tubes in which circulates hot water. The fins are rectangular and their small edges are folded according to an obtuse angle. A band of foam material surrounds the stack along the edges of the folds and along the end fins. The band comprises holes which are traversed by the tubes protruding from the end fins.The band is wider than the small edge of the fins and the parts of the band projecting from the stack of fins contribute to the tightness of the mounting of the radiator on the conduit provided for the air to be conditioned.