seawater exposure up to at least 120 u00b0 c and had a dielectric constant at 1 mhz 24 u00b0 c of 4 60 with reference now to fig4 there is shown another embodiment of the present invention wherein a riser string r 1 is supported both laterally or vertically and horizontally using a sleeve and a bearing made of a composite material according to the present invention with reference to fig4 a socket shown generally as 50 comprises an outer or bowl 52 in which is received a bushing 54 received in bushing 54 is a collar 54 having a bore 58 through which a titanium stress joint 60 extends titanium stress joint 60 differs from stress joint 36 in that it is cylindrical rather than having an upset frustoconical portion such as 38 on stress joint 36 stress joint 60 also is provided with a radially outwardly annularly extending flange 62 received in a recess 64 of collar 56 is a sleeve 66 made of a composite as described above collar 64 is also provided on its upper surface with a counterbore 68 in which is received a bearing 70 bearing 70 being made of a composite material as described above it can be seen that stress joint 60 is electrically isolated from socket 50 by means of bearing 70 and sleeve 66 additionally the fretting of stress joint 60 is minimized by sleeve 66 much in the same manner that sleeve 42 acts to minimize fretting of stress joint 36 it will be appreciated that socket 50 can be attached or secured to a positioned.