Abstract: The invention concerns a smooth engagement element of a clutch friction disc, in particular for a motor vehicle, consisting, at least partly in a silicone addition.

Abstract: This device (10) comprises first (24A) and second (24B) friction lining members, substantially annular and coaxial, separated axially and delimited by opposing friction faces. The first friction lining member (24A) comprises a radially external part (32A) comprising a friction lining (26A), a radially internal part (30A) intended to be fixed to the second friction lining member (24B), and elastic connecting tongues (35A) each provided with a first end (36A) for connection to the radially external part (32A) and a second end (38A) for connection to the radially internal part (30A), the first (36A) and second (38A) connecting ends having an angular offset between them that is variable according to the axial separation of the two friction lining members (24A, 24B).

Abstract: A heat exchanger has a fluid chamber with a peripheral foot, as well as a collector plate with an edge delimiting a groove for a gasket and the peripheral foot. The gasket is formed from a bead of a polymerizable material which is deposited, at a chosen location, on the bottom of the groove, and then polymerized before being compressed by the peripheral foot of the fluid chamber.