Abstract: A coaxial heat transfer tube (100), comprising a first inner heat transfer tube (110) having straight parts (111, 113, 115, 117) and curved parts (112, 114, 116), a first outer heat transfer tube (120) having straight parts (121, 123, 125, 127) and curved parts (122, 124, 126). The first outer heat transfer tube (120) radially surrounds the first inner heat transfer tube (110) at least within the first primary straight part (121) and the first primary curved part (122). Thermally insulating material (530) has been provided in between a curved part (122) of the first outer heat transfer tube (120) and a curved part (112) of the first inner heat transfer tube (110). Neither straight part (121) nor a curved part (122) of the first outer heat transfer tube (120) comprises a longitudinal seam. A method for making a coaxial heat transfer tube (100).

Abstract: A connection unit for connecting two exhaust gas-carrying assembly units of an exhaust system of an internal combustion engine, includes a ring washer-shape connection element (26) with a connection side (42), which is to be positioned to face a counter-connection element (24) to be connected to the connection element (26) or/and in contact with the counter-connection element (24). A passage opening (28), bordered by an inner circumferential surface (36) of the connection element (26), receives a connection pipe (30), which is inserted into the passage opening (28) and extends in the direction of a pipe longitudinal axis (L). The connection pipe (30) is connected to the connection element (26) in the area of the inner circumferential surface (36) by welding, or/and the connection pipe (30) projects with a centering section (40) on the connection side (42) of the connection element (26).

Abstract: An energy exchanger for exchanging energy between a hot flow and a cold flow may comprise a hot flow section and a cold flow section, each of the sections comprising the same quantity of channels having variable cross sections. The inlets of the hot flow channels may be juxtaposed to the outlets of the cold flow channels and the outlets of the hot flow channels may be juxtaposed to the inlets of the cold flow channels such that the hot and cold flows move in opposing directions. The energy exchanger may further comprise a liquid distribution system and a common interface between each hot flow channel and a corresponding cold flow channel with an exponentially varying surface area adapted for exchanging latent energy released through condensation in the hot flow section and absorbed through evaporation in the cold flow section.

Abstract: An insulating cover for assemblies including pipe elements, pipe couplings, elbows, Tees and valves also acts as a vapor barrier. Cover portions are joined along a seam which provides for a continuous seal between both the cover portions and the pipe elements which extend through channels defined in the cover. The seam includes a furrow into which sealant is forced when the cover portions are joined around the assembly. The furrow is defined by an asymmetric tongue and groove joint. Canals in the channels, in communication with the grooves, also receive the sealant to provide the continuous seal.

Abstract: A duct panel, a method of manufacturing a duct panel, a duct section and a method of installing a duct are disclosed. The duct panel includes a laminate structure having an insulation layer disposed between a first support layer and a second support layer, the laminate structure having an end width; and an end cap attached to the end width and configured to be coupled to a mounting flange, wherein the mounting flange is configured to mount the duct panel. The end cap and the mounting flange comprise different materials.

Abstract: A pipe fitting having a first body and a second body that together at least partially define a fluid flow passage. The first body defines a first portion of the fluid flow passage that extends from a first end of the fluid flow passage to a first internal opening. The second body defines a second portion of the fluid flow passage that extends from a second internal opening to a second end of the fluid flow passage. The first body has a first interface surface that surrounds the first internal opening, the first interface surface having a plurality of anti-rotation grooves. The second body has a second interface surface that surrounds the second internal opening and engages with the first interface surface. The first internal opening is in fluid communication with the second internal opening. The second interface surface has a plurality of anti-rotation fingers that are each received by and engage with a corresponding one of the anti-rotation grooves.

Abstract: A central body for a hydraulic system for fluid, including a frame having a first tubular end for connecting an upstream hydraulic circuit including a first fitting, and a second tubular end for connecting a downstream hydraulic circuit including a second fitting, the central body including a passage passing through the frame in order to convey the fluid coming from the upstream hydraulic circuit to the downstream hydraulic circuit, the frame being produced from an electrically insulating material, the central body including a printed circuit having controlled electrical properties in order to conduct a part of the electrical charges flowing in the upstream hydraulic circuit and the downstream hydraulic circuit.

Abstract: An electrical isolator includes a first fluid-carrying member and a second fluid-carrying member spaced apart from the first fluid-carrying member in an axial direction and a resistive, semi-conductive or non-conductive component located between the first and second fluid-carrying members. The component is adapted to convey fluid flowing from the first fluid-carrying member to the second fluid-carrying member. The isolator also include a first fluid sealing member provided between the first fluid-carrying member and the component, a second fluid sealing member provided between the second fluid-carrying member and the component, and a reinforcing composite encircling the first fluid-carrying member, the second fluid-carrying member and the resistive, semi-conductive or non-conductive component. A a radially inner portion of the component separates the first fluid-carrying member and the second fluid-carrying member by an axial distance.

Abstract: A submarine power cable having: a power core including a conductor, wherein the conductor has a conductor joint in a joint region of the power core, a main armor layer including a plurality of main armor wires arranged around the power core and extending in the axial direction of the power core, and a joint reinforcement armor layer including a plurality of joint reinforcement armor wires axially locked relative to the main armor wires, wherein the joint reinforcement armor layer is provided only in the joint region and arranged layered with the main armor layer, the joint reinforcement armor layer and the main armor layer thereby forming a dual-layer armor only in the joint region.

Abstract: An air-to-coolant heat exchanger for an electronics rack is provided, which includes first and second tube segments, one or more connector segments, and a plurality of thermally conductive fins attached to the tube segments. The first tube segment includes a first inner tube positioned within a first outer tube, defining a first inner coolant-carrying channel and first outer coolant-carrying channel, and the second tube segment has a second inner tube positioned within a second outer tube, defining a second inner coolant-carrying channel and second outer coolant-carrying channel. The connector segment(s) couples in fluid communication at least one of the first and second inner coolant-carrying channels, or the first and second outer coolant-carrying channels. The heat exchanger is coupled to separately receive a first coolant and a second coolant, with the first coolant passing through the inner channels, and the second coolant through the outer channels.

Abstract: A method of coating a field joint, pipe sections for forming a coated field joint, and a coated field joint formed thereby. First and second angular cut backs are provided in the parent coating of each pipe section. The first angular cut back is at an angle of about 30°±5° relative to the longitudinal axis of the field joint, and the second angular cut back is positioned further from the field joint than the first angular cut back. The first and second angular cut backs result in the parent coating having a stepped profile, a step in the stepped profile between the first and second angular cut backs, the is substantially parallel to the longitudinal axis of the field joint and is free of indentations. The field joint coating is injection moulded to have an upstand that is less than or equal to about 5 mm.

Abstract: A shrouded pipe formed from inner and outer pipe sections, the inner pipe section having an outwardly projecting flange joining the outer pipe section, and the outer pipe section having an inwardly projecting flange joining the inner pipe section, an annular volume between the inner and outer pipe sections providing a secondary fluid path. The flanges control axial position of the inner pipe section. By providing one flange which extends radially outwardly and one which extends radially inwardly, assembly is possible of the shrouded pipe by inserting the inner pipe section into the outer pipe section, without modification of the outer pipe section or inner pipe section. The first and second flanges ensure no unwanted contact between the inner and outer pipe sections and, therefore, prevent damage to the primary fluid path. The first and second flanges ensure good load distribution between the inner and outer pipe sections.

Abstract: A prefabricated outdoor thermal duct system is provided having a metal formed ductwork air passage, a hard board insulation layer glued to the metal duct leaving custom cut space for duct connections, a custom prefabricated cladding formed and adhered to the hard board insulation, a custom fabricated insert matching the insulation material, installed over the duct connection in the field to seal the joint, and a final fabricated cap adhered to the cladding.

Abstract: An exhaust manifold is provided comprising a first log comprising a plurality of inlet segments each having a pair of inlet ports configured to receive exhaust gas from a pair of cylinders of an engine, a second log comprising a plurality of inlet segments each having a pair of inlet ports configured to receive exhaust gas from a pair of cylinders of the engine, and a collector coupled to the logs, the collector comprising a first pair of intake openings configured to receive exhaust gas from the first log, a second pair of intake openings configured to receive exhaust gas from the second log and an outlet configured to route the exhaust gas to a turbocharger, wherein the first pair of intake openings are coupled to a pair of bellows of the first log, each of the pair of bellows being coupled to an inlet segment.

Abstract: A flow passage connecting apparatus for a heat exchanger includes a boss formed of a resin material in a columnar shape and having a plurality of through-holes for each receiving from one side one end of a heat exchanger tube made of a resin material, and a coupler made of a resin material and having a body portion formed in a circular cylindrical shape. The body portion is configured to receive therein a part of the boss on the other side opposite to the one side and to be connected to the boss by at least one of threaded engagement and full-circle welding. The connecting apparatus further includes first and second seal structures sealing between the boss and the body portion. The body portion has a communication hole formed at a position between the first and second seal structures to communicate between an inside and outside of the body portion.

Abstract: The invention relates to pipe heat insulation and to methods of heat insulation installation on weld joints of pipes for transportation of oil and oil products. The heat insulation of pipe weld joints for subsurface pipelining mounting includes an anticorrosive protection of welded pipe joints using heat-shrinkable polymeric tape, heat insulating polyurethane foam pipe coverings mounted on the junction, that are held together with a tie strap locks, hot-melt adhesive tape glued at the edges of the pipe protective envelope with overlap on the pipe coverings of polyurethane foam and protective galvanized metal casing installed symmetrically relative to the center of the weld joint, the surface of which is sealed with a heat-shrinkable polymeric fabric.

Abstract: The present invention provides dietary supplement formulations that may be beneficial for developing and strengthening bones and joints. Also provided are methods of treating a bone disease, such as osteoporosis, and methods of strengthening bones and joints by administering the dietary supplements to a subject in need thereof.

Abstract: A vent pipe and system formed from such vent pipes is provided. The vent pipe includes an inner casing, an outer casing surrounding the inner casing, and an insulation material between the inner and outer casings. The vent pipe also includes, a male end portion, a female and portion for receiving a male end portion end of another vent pipe, the female end portion being opposite the male end portion. The vent pipe further includes a first flange extending from the male end portion, and a second flange extending from the female end portion for mating with the first external extending from the male portion of another vent pipe.

Abstract: An assembly of two coaxial pipes of the PiP type, having at least two coaxial pipe unit elements each with an inner pipe and an outer pipe, defining an annular space, filled with an insulating material, and assembled end to end by welding, including a sleeve with a hollow tubular wall made of rigid or semirigid material, preferably of plastics material or composite material, surrounding the pipe in register with the welded junction zone between the two coaxial pipe unit elements, the hollow tubular wall of the sleeve having an outer casing and an inner casing connected together at their longitudinal ends in leaktight manner, thereby defining an internal volume that is completely filled with a quasi-incompressible thermally insulating material.

Abstract: Corrosion Under Insulation (CUI) of an insulated iron or other corrosion prone object (1) is detected by taking a sample (8) of the pore fluid from the pores of a permeable insulation layer (2) that covers at least part of the object (1) and analyzing the composition of the sample (8) on the presence of any tracer fluid, such as phospines, mercaptans, alcohols, acids, ketones and/or aldehydes emitted or acetic acid and/or butoxyethanol absorbed by any corrosion of the corrosion prone object (1) by a tracer fluid detection sensor (6).

Abstract: This invention provides an improved replacement nozzle configuration. The nozzle is provided in two pieces. A first nozzle piece is a relatively thin-walled cylinder that is inserted into the counterbored opening of a pressure vessel after the protruding portion of the original nozzle has been removed. A weld pad is attached to the pressure vessel, to which the first replacement nozzle piece is welded. Due to the reduced dimensions of the thin-walled first nozzle portion, a much smaller weld pad and pad-to-nozzle weld can be used. A second nozzle piece is positioned within the first nozzle piece and welded thereto. The existing instrumentation piping is connected to the free end of the second nozzle piece. This two-piece replacement nozzle can be implemented in approximately half the time required for the one-piece design.

Abstract: The present disclosure pertains to a dielectric fitting for use in a fluid piping system to provide electrical insulation between metal components while fluid is transferred through a sealed connection. The dielectric fitting includes a metallic body including a distal end and a proximal end and a flange extending radially from the body and having a first end surface and an opposite second end surface. An electrical insulation over-mold adheres to the distal end of metallic body, the second end surface of the flange and at least a portion of the first end surface. The insulation over-mold is secured by a plurality of recesses or by an annular member positioned along the distal end. The over-mold includes an annular portion that extends axially away from the distal end of the metallic body.

Abstract: A thermal insulation of pipes of a drill pipe riser, the novelty consisting basically in the fact that the thermal insulation comprises several layers around the pipe and between the first layer and the pipe, and between two adjacent layers, there are spaces where sea water penetrates. A thermal insulation system of joint couplings of pipes for a drill pipe riser comprising a tubular segment that circumferentially surrounds the region of the joint coupling and, so that between the tubular segment and the pipes is formed a space where sea water penetrates.

Abstract: In a gas turbine, an exhaust casing and an exhaust chamber are connected by an exhaust chamber support that can absorb thermal expansion, and the exhaust chamber and an exhaust duct are connected by an exhaust duct support that can absorb thermal expansion. An insulator is mounted on an outer peripheral surface of the exhaust chamber, and the exhaust chamber support and the exhaust duct support are disposed outside the insulator in the form of a plurality of strips. Because the thermal stress at a connection portion of the exhaust chamber is reduced, the durability is enhanced.

Abstract: A pipe-in-pipe pipeline has a bulkhead that transfers thermal stress from an inner pipe to an outer pipe, wherein at least part of the bulkhead forms a conduit for a product traveling through the inner pipe.

Abstract: A hydraulic joint is disclosed. The hydraulic joint includes a tube, a hydraulic fitting, and a tip seal. The hydraulic fitting may be positioned around the tube. The hydraulic fitting may include a first open end for receiving the tube. The tip seal may be configured to define an opening that allows for the passage of leaks. The tip seal may be positioned on the hydraulic fitting adjacent the open end and forming a mechanical barrier between the fitting and the tube.

Abstract: A collet connection insulation apparatus has a frame having a first portion hingedly connected to a second portion such that the first and second portions are movable between an open position and a closed position, a first insulation section affixed to the first portion of the frame, a second insulation section affixed to the second portion of the frame, and a latch for locking the first and second portions of the frame in the closed position. The interior volume of the insulation sections is suitable for receiving the collet connection therein. The latch is slidably mounted on one portion of the frame so as to engage a sloted flange on another portion of the frame. The latch can be manipulated by a remotely-operated vehicle.

Abstract: A composite hose includes a tubular body of flexible material for transferring cryogenic fluid through the hose and for preventing fluid leakage through the body. The tubular body includes an inner wire helix spirally wound along the length of the hose, an outer wire helix spirally wound along the length of the hose, at least two reinforcing layers placed in between the inner and outer wire, at least one sealing layer placed between two reinforcing layers, an end fitting at both ends of the tubular body, each end fitting provided with a part for connection to another hose flange and an elongated cylindrical part, which is divided in an anchoring area for anchoring the tubular body and a static sealing area for fluid tight sealing of the hose. A gas tight sealing is created by bonding the at least one sealing layer to the cylindrical part over a ring shaped bonding area.

Abstract: A non-conductive composite insert is provided between conductive portions, useful, for example, in downhole EM telemetry applications as an external “gap sub” in a drill collar, or as a sonde-based internal gap. In a preferred embodiment, the composite is made from a glass-fiber reinforced plastic, and separates non-magnetic conductive portions made from stainless steel. The composite insert provides a slanted or tapered transition into the conductive portions at either or both ends of the insert. The transitions on the composite insert may comprise one or more tapered surfaces, which may be male or female in configuration with respect to matching transitions on the conductive portions. The transitions may be bonded together by adhesive, or alternatively may be threaded.

Abstract: In a gas turbine, an exhaust casing and an exhaust chamber are connected by an exhaust chamber support that can absorb thermal expansion, and the exhaust chamber and an exhaust duct are connected by an exhaust duct support that can absorb thermal expansion. An insulator is mounted on an outer peripheral surface of the exhaust chamber, and the exhaust chamber support and the exhaust duct support are disposed outside the insulator in the form of a plurality of strips. Because the thermal stress at a connection portion of the exhaust chamber is reduced, the durability is enhanced.

Abstract: Provided is a pipe insulating joint for insulating in between a first pipe element and a second pipe element, wherein at least one of which includes an electrical current impressed therein. The pipe insulating joint including a pipe segment having a wall portion made of an electrical insulating material and coupling means for coupling the pipe segment between the first pipe element and the second pipe element, such that the electrical current is not transferred therebetween.

Abstract: A coaxial pipe element (1) includes an outer pipe (1a) and an inner pipe (1b), and at each of its ends a junction forging (2a, 2b), each forging having at least an inner first branch (32) set back (L1) from an outer first branch (31), in which all of the circular welds between the inner and the outer pipe and the junction forgings are made on the outside of the pipes.

Abstract: An insulated tubing member of an insulated tubing string includes inner and outer tubing. Solid insulating material is provided in an annular cavity between the inner and outer tubing and a slip joint is provided between adjacent insulated tubing members to accommodate differential expansion of the inner and outer tubing.

Abstract: A gap sub assembly and methods for using the gap sub provide an electrical isolating joint that is mechanically strong enough to withstand the rigors of drilling environments, resistant to environmental effects (heat, corrosive liquids and gases, and high pressures), and maintainable. The gap sub assembly provides a male member and a female member that may be connected together, wherein a non-conductive material is applied between the two at the attachment points. A locking ring or collar affixes to both male and female members to prevent back off while drilling and preserving the electrical isolation of the gap joint. Non-conductive material may be injected between the locking ring and one or more of the male or female members.

Abstract: A method for protecting a welded pipe assembly from metal dusting and a welded pipe assembly suitable for performing the method. The welded pipe assembly comprises two pipes, weld material joining the two pipes and insulating material. The pipes are protected from metal dusting by a protective coating. The present invention is useful for conveying gases comprising carbon monoxide at temperatures greater than 425° C. while preventing metal dusting of the welded piping assembly.

Abstract: An enclosure for providing a fluid conduit and high-pressure fitting of a fluid transfer hose with a highly-insulative vacuum jacket and for providing convenient access to the fitting. The enclosure includes an interface collar mounted to an end of the transfer hose with the fluid conduit and the fitting extending therethrough, a bellows fastened at a first end to an interior of the interface collar and fastened at a second end to a pass-through collar, a tubular slide cuff mounted to the pass-through collar and extending over the bellows and the interface collar, and a connecting nut mounted to the pass-through collar. The slide cuff is axially displacable relative to the interface collar between a retracted position, wherein the connecting nut, the pass-through collar, and the bellows are refracted to expose and provide access to the fitting, and an extended position, wherein the fitting is entirely covered by the enclosure.

Abstract: A heat exchanger is provided that includes an expansion joint that accommodates thermal expansion of an inner casing relative to an outer casing. The expansion joint is positioned between the inner casing and the outer casing and is shielded from high temperature fluid flows by a wall of the heat exchanger and by thermal insulation.

Abstract: An apparatus that enables quick disconnect termination or connection for cryogenic transfer lines is presented. The apparatus is a connector that will allow two lines to be connected and coupled for simultaneously allowing for fluid to occur and electrical communication to ensue. Connection and termination will occur successfully under a pressurized environment.

Abstract: The present disclosure pertains to a dielectric fitting for use in a fluid piping system to provide electrical insulation between metal components while fluid is transferred through a sealed connection. The dielectric fitting includes a metallic body including a distal end and a proximal end and a flange extending radially from the body and having a first end surface and an opposite second end surface. An electrical insulation over-mold adheres to the distal end of metallic body, the second end surface of the flange and at least a portion of the first end surface. The insulation over-mold is secured by a plurality of recesses or by an annular member positioned along the distal end. The over-mold includes an annular portion that extends axially away from the distal end of the metallic body.

Abstract: An arrangement is disclosed for connecting at least one double-walled pipe of stainless steel to a LNG tank having an inner shell of stainless steel and an outer shell spaced at a distance from the inner shell, the inner and outer shells defining an isolation space therebetween. The at least one double-walled pipe includes a common outer wall and at least one inner pipe. The outer wall of the pipe is connected to the inner shell of the tank in such a way that the outer wall and/or a pipe fitting of cold resistant material between the inner shell and the outer wall is arranged to compensate for changes in the length of the outer wall of the pipe and/or of the pipe fitting due to temperature differences between the outer wall of the pipe and the inner shell of the tank.

Abstract: An adaptor assembly to be fitted onto a service pipe comprising a host pipe lined with lining pipe is provided. The adaptor assembly includes a body to seal with the host pipe, a bore extending along a longitudinal axis of said body, and a compression element mountable on and axially and displaceable relative to the body. The adaptor assembly includes an axially translatable piston, an annular flange protruding into said bore, and a grip ring disposable between said piston and said flange and having an inner radial surface an outer radial surface of the lining pipe. A slip spacer is disposable between the compression element and the piston to transmit axial load prevent transmission of torque. The compression element is moveable to axially displace the piston causing the grip ring to bear against the inclined annular flange and grip radially inwardly against the outer radial surface.

Abstract: A decoupling element for a conduit includes an interior hose made of metal and a corrugated exterior hose surrounding the interior hose, with a hollow-cylindrical gap formed between the corrugated exterior hose and the interior hose. At least one damping element is arranged in the gap, with the damping element(s) constructed of a woven fabric made of a high-temperature-resistant material and having an outside surface with at least one bulge, wherein the bulge positively engages with a corrugation of the exterior hose. The exterior hose may be a membrane bellows. The woven fabric may be a metallic material. The at least one damping element covers, along the rotation axis, preferably a proportional length of at least 20% of the hollow-cylindrical gap and has preferably a static stiffness in the radial direction of less than 100 N/mm.

Abstract: A continuous communications conduit for use in a well is disclosed. A first 101 and second 102 conduit section are threadably engaged and a weldment is formed 200. A heat shield conduit 220 can be disposed within a bore (111, 112) of a conduit section (101, 102) between a first conduit section shoulder 151 and a second conduit section shoulder 152. A first 301, second 302, and third 303 conduit section can be threadably engaged and a weldment 400 formed. An electrical conductor 300 can be disposed in a bore of the conduit sections (301, 302, 303). A heat shield conduit 320 can be disposed between a first conduit section shoulder 351 and a second conduit section shoulder 352. Optionally, an elastomeric stabilizer (410, 420) may be utilized.

Abstract: A shell type fitting cover provided and is formed from a polymer material or a flexible thermoplastic sheet. A continuous gasket is affixed to the peripheral edges of the shell fitting prior to its installation. Preferably the gasket is a flexible, compressible material. The fitting includes a shell having two ends that overlap onto the linear portions of a pipe insulation system and a longitudinal seam that allows the shell to be installed over an existing piping system. A strip of foam gasket material is provided along each of the peripheral edges in order to create a seal where the installed fitting overlaps the linear sections of insulation as well as where the fitting shell overlaps itself at the longitudinal joint.

Abstract: The invention relates to a device for metering a liquid reducing agent into an exhaust gas system for the reduction of pollutants in the exhaust gas. The device comprises a metering valve and an adapter to be mounted on an exhaust gas pipe. The metering valve is connected to the adapter by a connector element, which has at least one metal sound absorber.

Abstract: A bleed air duct joint insulation means is disclosed in which a leak vent comprises valve means.

Abstract: An exhaust connection coupler is provided having a flexible conduit portion, a cover made of a generally porous and flexible knitted metallic wire mesh material surrounding the conduit portion and a retainer for combining end parts of the conduit portion and cover. The cover may be constructed of a series of stockinette stitches formed in a continuous round-and-round manner in a seamless tubular configuration. The cover can be selected from a group of covers designed to be applied to the coupler, the particular cover being chosen for its weight or stiffness so as to selectively control the natural frequency of the coupler. Additionally, the loosely knitted configuration of the cover is designed to provide resistance limiting longitudinal growth of the coupler while enabling compression and angular flexibility. Further, the coupler may include one or more spacers for providing separation between the cover and the conduit portion.

Abstract: Described herein is a novel method and apparatus for preventing spark propagation from a hydraulic joint to a surrounding medium, such as a fuel source. The hydraulic joint includes a fitting and a tube. A tip seal may be placed about the edge of the hydraulic fitting or a sleeve may be placed about the joint, each resulting in an independent mechanical barrier between the joint and surrounding medium, thereby preventing spark propagation to the surrounding medium.

Abstract: A device for connecting aircraft fuel piping that includes male/female end fittings made of highly resistive material, designed to be bonded at the extremities of tubes in the piping and/or of piping connectors.

Abstract: A gap sub assembly can be used to form an electrical isolation in a drill string, across which a voltage is applied to generate a carrier signal for an electromagnetic (EM) telemetry system. The assembly comprises two conductive generally cylindrical components fashioned with a matching set of male and female rounded coarse threads, held such that a relatively uniform interstitial space is formed in the overlap space between them. The third component is a substantially dielectric electrical isolator component placed into the gap between the threads that effectively electrically isolates the two conductive components. Injecting the dielectric material under high pressure forms a tight bond resistant to the ingress of conductive drilling fluids (liquids, gases or foam), thus forming a high pressure insulating seal.