Abstract: One aspect of the invention provides a composite tube including: an inner plastic tube; an aluminum layer circumferentially surrounding the inner plastic tube; and an outer plastic layer circumferentially surrounding the aluminum layer. The aluminum layer is an alloy selected from the group consisting of: AL 3004, AL 3005, AL 3105, AL 5052, AL 6061, and AL 8006. The aluminum layer has a thickness within a corresponding range disclosed for the alloy in Table 2. Another aspect of the invention provides: a composite tube including: an inner plastic tube; an aluminum layer circumferentially surrounding the inner plastic tube; and an outer plastic layer circumferentially surrounding the aluminum layer. The aluminum layer can be an alloy having 0.1% or greater magnesium by mass.

Abstract: One aspect of the invention provides a system including: a length of energy-dissipative tubing; a first sealing device coupled to a first end of the length of energy-dissipative tubing; and a second sealing device coupled to a second end of the length of energy-dissipative tubing. Exposure to one or more selected from the group consisting of: fault currents or lightning strikes at an exposure point along the length of energy-dissipative tubing will produce arcs at the exposure point and at least one of the first end and the second end.

Abstract: One aspect of the invention provides an energy-dissipative fuel gas tube including: a length of corrugated stainless steel tubing; an inner resin layer surrounding a radially outer surface of the corrugated stainless steel tubing; a laminated foil layer surrounding a radially outer surface of the inner resin layer; and an outer resin layer extruded over a radially outer surface of the laminated foil. The laminated foil layer includes: a foil and a high-tensile-strength material bonded to the foil. Another aspect of the invention provides an energy-dissipative fuel gas tube including: a length of corrugated stainless steel tubing; a resin layer surrounding a radially outer surface of the corrugated stainless steel tubing; and a laminated foil layer surrounding and bound directly to a radially outer surface of the resin layer. The laminated foil layer includes: a foil and an outer protective layer bonded to the foil.

Abstract: One aspect of the invention provides an elastomeric bushing including: a plurality of rigid members defining one or more internal annular ribs and one or more elastic members. The rigid members include: a first internal annular rib adapted and configured to engage a corrugation valley of corrugated tubing; and one or more trailing lips adapted and configured to extend through a central opening of a nut and engage said nut, thereby preventing axial movement of the bushing when a corrugated tubing is advancing through the bushing. The one or more elastic members are adapted and configured to: hold the plurality of rigid members in a substantially annular configuration; allow the plurality of rigid members to expand to allow a corrugation peak to pass under the first internal rib; and hold the plurality of rigid members against the corrugated tubing so that the first internal rib lies within a corrugation valley.

Abstract: One aspect of the invention provides a jacket-stripping tool including: a reference stop adapted and configured to contact an end of corrugated stainless steel tubing; and one or more cutting blades arranged substantially perpendicular to a central axis of the tool and adapted and configured to create one or more cuts through one or more external jacket layers of the corrugated stainless steel tubing. At least one of the one or more cutting blades is positioned relative to the reference stop such that the at least one of the one or more cutting blades is a multiple of a distance between adjacent corrugation valleys of the corrugated stainless steel tubing.

Abstract: One aspect of the invention provides a bushing including: a plurality of rigid members defining one or more internal ribs including a first internal rib adapted and configured to engage a corrugation valley of corrugated tubing; and one or more elastic members adapted and configured to: hold the plurality of rigid members in substantially annular configuration; allow the plurality of rigid members to expand to allow a corrugation peak to pass under the first internal rib; and hold the plurality of rigid members against the corrugated tubing so that the first internal rib lies within a corrugation valley. Another aspect of the invention provides a fitting including: a body member defining a sleeve portion; and a bushing as described herein received within the sleeve portion of the body member.

Abstract: One aspect of the invention provides a sealing device for connecting a length of corrugated tubing. The sealing device includes: a body member defining a sleeve portion; a nut adapted and configured for threaded engagement with the body member, the nut defining an internal shoulder; and a bushing. The bushing includes: an annular internal rib located on a proximal end, the annular internal rib adapted and configured to engage a corrugation valley of corrugated tubing; a medial external rib adapted and configured to be engaged by the internal shoulder of the nut and to advance the bushing within the sleeve portion of the body member; and a trailing hinged portion located on a distal end. The trailing hinged portion is adapted and configured for inward compression against the corrugated tubing received within the bushing as the nut is advanced over the trailing hinged portion.

Abstract: One aspect of the invention provides an energy-dissipative fuel gas tube including: a length of corrugated stainless steel tubing; an inner resin layer surrounding a radially outer surface of the corrugated stainless steel tubing; a laminated foil layer surrounding a radially outer surface of the inner resin layer; and an outer resin layer extruded over a radially outer surface of the laminated foil. The laminated foil layer includes: a foil and a high-tensile-strength material bonded to the foil. Another aspect of the invention provides an energy-dissipative fuel gas tube including: a length of corrugated stainless steel tubing; a resin layer surrounding a radially outer surface of the corrugated stainless steel tubing; and a laminated foil layer surrounding and bound directly to a radially outer surface of the resin layer. The laminated foil layer includes: a foil and an outer protective layer bonded to the foil.

Abstract: One aspect of the invention provides a bushing including: a plurality of rigid members defining one or more internal ribs including a first internal rib adapted and configured to engage a corrugation valley of corrugated tubing; and one or more elastic members adapted and configured to: hold the plurality of rigid members in substantially annular configuration; allow the plurality of rigid members to expand to allow a corrugation peak to pass under the first internal rib; and hold the plurality of rigid members against the corrugated tubing so that the first internal rib lies within a corrugation valley. Another aspect of the invention provides a fitting including: a body member defining a sleeve portion; and a bushing as described herein received within the sleeve portion of the body member.

Abstract: A bushing including a first annular internal rib adapted and configured to engage a corrugation valley of corrugated tubing and a second annular internal rib adapted and configured to press against a conductive layer surrounding the corrugated tubing is provided. The second annular internal protrusion has a rounded, substantially non-piercing profile. Also provided is a sealing device for connecting a length of tubing. The sealing device includes a body member defining a sleeve portion and the bushing as described herein adapted and configured to be received in the sleeve portion. Also provided is a length of tubing including: an inner tubing layer and the fitting as described herein engaged with the inner tubing layer.

Abstract: One aspect of the invention provides a sealing device for connecting a length of corrugated tubing. The sealing device includes: a body member defining a sleeve portion; a nut adapted and configured for threaded engagement with the body member, the nut defining an internal shoulder; and a bushing. The bushing includes: an annular internal rib located on a proximal end, the annular internal rib adapted and configured to engage a corrugation valley of corrugated tubing; a medial external rib adapted and configured to be engaged by the internal shoulder of the nut and to advance the bushing within the sleeve portion of the body member; and a trailing hinged portion located on a distal end. The trailing hinged portion is adapted and configured for inward compression against the corrugated tubing received within the bushing as the nut is advanced over the trailing hinged portion.

Abstract: One aspect of the invention provides an energy dissipative tube including: a length of tubing; an inner resin layer surrounding an outer surface of said tubing; a metal foil adjacent to an outer surface of said inner resin layer; and an outer resin layer surrounding said metal foil and said inner resin layer. The outer resin has a property selected from the group consisting of: static dissipative and antistatic.

Abstract: One aspect of the invention provides a jacket-stripping tool including: a reference stop adapted and configured to contact an end of corrugated stainless steel tubing; and one or more cutting blades arranged substantially perpendicular to a central axis of the tool and adapted and configured to create one or more cuts through one or more external jacket layers of the corrugated stainless steel tubing. At least one of the one or more cutting blades is positioned relative to the reference stop such that the at least one of the one or more cutting blades is a multiple of a distance between adjacent corrugation valleys of the corrugated stainless steel tubing.

Abstract: One aspect of the invention provides an energy dissipative tube including: a length of tubing; an inner resin layer surrounding an outer surface of said tubing, wherein said inner resin layer is substantially free of a fire retardant; a non-expanded metal foil adjacent to an outer surface of said inner resin layer; and an outer resin layer surrounding said metal foil and said inner resin layer, wherein said outer resin layer includes a fire retardant. Another aspect of the invention provides an energy dissipative tube include: a length of tubing; an inner resin layer surrounding an outer surface of said tubing, wherein said inner resin layer is static dissipative; a non-expanded metal foil adjacent to an outer surface of said inner resin layer; and an outer resin layer surrounding said metal foil and said inner resin layer, wherein said outer resin layer is conductive.

Abstract: One aspect of the invention provides a bushing including a first annular internal rib adapted and configured to engage a corrugation valley of corrugated tubing and a second annular internal rib adapted and configured to press against a conductive layer surrounding the corrugated tubing. The second annular internal protrusion has a rounded, substantially non-piercing profile. Another aspect of the invention provides a sealing device for connecting a length of tubing. The sealing device includes a body member defining a sleeve portion and the bushing as described herein adapted and configured to be received in the sleeve portion. Another aspect of the invention provides a length of tubing including: an inner tubing layer and the fitting as described herein engaged with the inner tubing layer.

Abstract: Bushings, sealing devices, tubing, and methods of installing tubing are provided. One aspect of the invention provides a bushing having one or more axially-extending tongues. Another aspect of the invention provides a sealing device for connecting a length of tubing. The sealing device includes a body member defining a sleeve portion and a bushing arranged to be received in the sleeve portion. The bushing includes one or more tongues adapted and configured to be received over at least one layer of the tubing.

Abstract: Bushings, sealing devices, tubing, and methods of installing tubing are provided. One aspect of the invention provides a bushing having one or more axially-extending tongues. Another aspect of the invention provides a sealing device for connecting a length of tubing. The sealing device includes a body member defining a sleeve portion and a bushing arranged to be received in the sleeve portion. The bushing includes one or more tongues adapted and configured to be received over at least one layer of the tubing.