Press-fitting device for connection of a tube

A press-fitting device for the connection thereto of a tube comprising:

• a connection body (12) including a substantially cylindrical connection portion (18) adapted for mounting thereon the end of a tube (39),
• at least one deepened portion (20) formed in a supporting shell (16) of the connection portion (18) of the connection body (12),
• an annular sealing element (28) for sealing the supporting shell (16) of the connection body (12) with respect to the tube (39),
• the annular sealing element (28) extending over said at least one deepened portion (20),
• a pressing shell (42) for pressing an end of the tube (39) onto the supporting shell (16) of the connection portion (18) of the connection body (12),
• said annular sealing element (28) having a substantially U-shaped cross section defined by a cylindrical inner wall (30) extending over said at least one deepened portion (20), a radial end wall (32) and a cylindrical outer wall (34) substantially parallel to the inner wall (30), the distance between the inner wall (30) and the outer wall (34) being substantially identical to the wall thickness of the tube (39), and
• said sealing element (28) being adapted for insertion into a recess (36) in the connection portion (18) of the connection body (12), the depth of the recess (36) being substantially equal to the thickness of the wall of the shell and the thickness of the inner wall (30) of the sealing element (28), respectively.