36 of the locking sleeve 31 and with a screw thread 37 on the first section 10 the swivel nut 34 comprises a hexagonal portion 38 which can be gripped by a torque wrench not shown and elastomeric rings 39 are provided between the inner surface of the nut 34 and outer surfaces of the conduit 4 and of first section 10 to create a low friction between the surfaces when the nut is tightended or released by the torque wrench the swivel nut 34 comprises a radial port 40 which ensures that the fluid pressure in the annular space 41 between the nut 34 and the sleeves 31 and 32 equals the fluid pressure in the space around the nut 34 fig1 b further illustrates that at the midpoints of the conical contact areas between the tapered inner surfaces of the sleeves 31 32 and the tapered outer surface of the metal ring 30 the wall thickness of said sleeves 31 32 is smaller than that of the metal ring 30 to allow in use the elevated pressure p 1 of the fluid around the nut 34 to press the surfaces onto each other in the same manner as the energizing of the joint 8 the construction of the second pressure fitting 28 is identical to that of the first pressure fitting 27 and therefore no detailed description of the construction and purpose of the swivel nut 44 metal ring 45 metal locking sleeve 46 and tubular end sleeve 47 of the second tubular section 14 and other components thereof is given in this specification the procedure for interconnecting the cables 1 and 2 for securing the joint around the electrical connector 6 is as follows first the pin and box parts of the connector 6 are.