10 of the invention in the environment of an internal combustion automotive exhaust system having two exhaust gas pipes 12 14 shown in phantom and one of which for example may be an exhaust manifold coupling 10 may be used in other environments and with other pipes as is apparent in this description it will be appreciated that pipes 12 14 are generally oriented co axially with axis 15 fig3 of coupling 10 although coupling 10 among other things may compensate for positional misalignment this particular fig1 illustrates the coupling 10 installed via press fit or via welding an alternative installation method is by fasteners through a flange other installation and assembly expedients may be used referring to fig2 an exploded view displaying various components of the invention is shown these include an inner cover 30 inner tube 40 damping element 50 bellows 60 and outer cover 70 these components are preferably nested or are interrelated to each other in the orientation and positions shown in fig3 which illustrates the assembled components of the invention in cross section the damping element or annulus 50 made of any suitable damping material is substantially centered in relation to the bellows 60 thus the convolutions 60 a 60 b at each end of the bellows 60 are spaced apart over a.