Abstract: A leaktight coupling between channels formed in two pieces that bear against each other via an intermediate block having at least one duct passing therethrough suitable for putting the respective channels in each of the pieces into communication with one another, the duct forming a housing for an insert provided with beads. The intermediate block has a tubular insert and a sealing device positioned in register with one of the pieces that is to bear against the intermediate block. The beads of the tubular insert are compressed between a shoulder formed in the duct and the other one of the pieces that is to bear against said intermediate block once the intermediate block is mounted between the two pieces.

Abstract: A leaktight coupling between channels formed in two pieces that bear against each other via an intermediate block having at least one duct passing therethrough suitable for putting the respective channels in each of the pieces into communication with one another, the duct forming a housing for an insert provided with beads. The intermediate block has a tubular insert and a sealing device positioned in register with one of the pieces that is to bear against the intermediate block. The beads of the tubular insert are compressed between a shoulder formed in the duct and the other one of the pieces that is to bear against said intermediate block once the intermediate block is mounted between the two pieces.

Abstract: A gasket is inserted between a housing filled with pressurized oil and a rotating shaft projects out from said housing. This gasket has two sealing lips which delimit between them a collecting chamber provided with a discharge passage for lubricant. A calibrated nozzle allows oil to be fed into the collecting chamber at a predetermined flow rate in order to lubricate the outer lip.

Abstract: A device for making a sealed connection between channels which are made respectively in two components which bear on each other via at least one spacer. This device is in the form of a tubular insert 8 comprising a rigid tubular armature 9 having a length slightly less than the thickness of the spacer in the region of the channels; and at least one tube 10, made of rubber or elastic synthetic material, lining at least the ends of the armature 9 and having at both its ends a rim 11, 12 covering the corresponding end of the armature, this rim being able to be compressed, upon fitting the insert, in a sealed manner between each end of the tubular armature 9 and the corresponding component.