Abstract: A flexible union for connecting together two rigid tubular sections capable of oscillating with respect to each other, the union comprising elastic annular members each having its inner and outer faces connected to annular spherical surfaces bordering a gap separating from each other two rigid bodies each fast with or connected to a respective tubular section. Each elastic element is in one piece and adheres to the spherical annular surfaces between which it is located and the elastic elements delimit in said gap at least one closed annular chamber completely filled with a liquid which is little or not compressible.

Abstract: The connection is of the Cardan type comprising a rigid intermediate structure, a first modular assembly of flexible connection elements placed between the intermediate structure and the first rigid body to allow relative rotation of the structure and of the first rigid body about a first axis x--x, and a second modular assembly of flexible connection elements placed between the intermediate structure and the second rigid body to allow the relative rotation of the structure and of the second rigid body about a second axis. The first and second assemblies comprise flexible bearings and abutments fabricated, at least partly, from a resilient material.This device is particularly suitable for anchoring a floating platform to the sea bed.