Dielectric pipe joint, particularly for underground pipes

A dielectric joint for pipes, particularly for underground pipes, comprising a male head of a first pipe which enters a mating and mutually opposite cup-shaped female head of a second pipe, a sealing insulating means being interposed between said pipes, wherein said sealing insulating means is composed of at least a first and a second independent parts, at least one elastomeric gasket being inserted between said first and second parts in order to maintain the continuity of the seal, and wherein said sealing insulating means is externally extended in an axial direction on said first pipe by an extent which reaches beyond an inlet edge of said female head and internally forms a tight-fitting cladding of said first and second pipes for a longitudinal extent which is at least equal to the overall length of the joint.