Abstract: Various embodiments of the present invention provide improved face seal gaskets for use in connecting meters and other devices to pipelines. The improved face seal gaskets include a planar annular ring portion and one or more tabs extending substantially perpendicularly from the annular ring portion. In use, the annular ring portion is disposed adjacent a sealing surface on the inlet or outlet of the device to facilitate a fluid tight connection between the device and the pipeline. The tabs engage complementary grooves formed in the inlet or outlet portions of the device to facilitate alignment of the annular ring to the sealing surface thereon. The tabs may also retain the face seal gasket adjacent the sealing surface to facilitate improved installation of the device to the pipeline.

Abstract: A flat gasket (1) for a valve comprises a substantially plate-like base body (2), which corresponds substantially to the contour (9) of a valve housing (11) to be connected thereto and which is provided with at least one first through-bore (3) for leading through a connecting element of the valve (11), with at least one second (6) and with at least one third through-bore (5) for leading through fastening means. The second through-bore (6) has a diameter which is different from the diameter of the third through-bore (5).

Abstract: A sealing ring assembly and an improved method for mounting a sealing ring into an electrochemical cell used for Electrochemical Capacitance Voltage (ECV) profiling measurements. The ring is located in a holder having at least one secondary bore providing fluid communication between a forward face of the holder and the central bore of the ring, directed parallel to but tangentially offset relative to the inner wall of the central bore so as to impart a degree of rotational flow to electrolyte entering the sealing ring through the or each secondary bore which effectively removes gas bubbles and refreshes the electrolyte. The holder facilitates ring removal with a much reduced risk of damage to the delicate sealing surface.

Abstract: The invention is a watertight joint seal for precast concrete box modules used to form underground enclosures to control the discharge of water runoff from roads and parking areas. The modules become sections of a tunnel structure, and the joint seal of the invention is constructed by forming the end of the walls of each module with mating offset inside and outside edge surfaces that are joined by an intermediate surface, applying sealing strips to the inside and outside edge surfaces of one end wall, compressing the modules against each other, and injecting an expansive grout into the cavity formed by the sealing strips and the modules' end surfaces. After the grout cures under the pressure resulting from its own expansion, the joint is watertight and does not suffer from leakage through cracks caused by the creep and relaxation characteristics which generally occur in joints formed with conventional grout or only rubber gaskets.

Abstract: A connector has a housing with a fit-on tube that can fit in a hood of a mating connector. Terminal fittings are fixed to ends of wires and are held by the housing. A sealing ring is mounted on an annular holding groove on a peripheral surface of the fit-on tube and is disposed between the peripheral surface of the fit-on tube and an inner surface of the hood to seal a gap therebetween. Engaging grooves are formed in the peripheral surface of the fit-on tube. The engaging grooves intersect the annular holding groove and are deeper than a bottom surface of the annular holding groove. Rotation-stopping projections project from the sealing ring to extend along a direction in which the engaging grooves extend and each has an engaging claw that can fit on a bottom of one of the engaging grooves.

Abstract: A method is provided for joining a metallic member to a structure made of a composite matrix material. One or more surfaces of a portion of the metallic member that is to be joined to the composite matrix structure is provided with a plurality of outwardly projecting studs. The surface including the studs is brought into engagement with a portion of an uncured composite matrix material so that fibers of the composite matrix material intertwine with the studs, and the metallic member and composite structure form an assembly. The assembly is then companion cured so as to join the metallic member to the composite matrix material structure.

Abstract: A gasket and a piping system using the gasket are disclosed. The gasket has an o-shaped body including an inner diameter and an outer diameter. The gasket further may include at least one gasket retaining bar attached to the body that bar prevents the gasket from being displaced while the spigot is being inserted into the gasket. The gasket may also include at least one restraining device attached to the body. The restraining device has at least one edge that extends beyond the inner diameter of the body of the gasket to engage the spigot.

Abstract: A novel gasket includes at least one gripping element embedded in an annular member for forming a seal between two tubulars. For tubulars having socket and spigot ends, the gripping element includes teeth for gripping an outer surface of the spigot end and a blunt tooth for contacting a front wall of the socket end. The blunt tooth rolls along the front wall during relative movement between the tubulars and can include a contacting face of a specialized geometry to adjust contact dynamics and/or roughened surfaces to increase the frictional contact between the blunt tooth and the front wall. The embedded element can also include at least four teeth arranged such that no more than two teeth normally grip the outer surface of the spigot end. One or more teeth can also include a transverse groove to enhance penetration into the outer surface of the spigot end.

Abstract: The invention relates to a flexible sealing element sealingly attached to a cable intended for connection to attachment means on e.g. the roof of a base station cabinet. When attaching the cable the front end of the sealing element is retracted to a position uncovering connecting means at the cable end. After attachment the front end is moved back to a position covering the connected cable end.

Abstract: An outer ring of a clamp-type joint for vacuum apparatus is disclosed. The joint includes a base forming an outer circumferential side and a pair of brims respectively extending from the top and bottom of the base toward the center axis of the joint, the inner side of the brims on which the brims come into contact with the O-ring being in the form of a convex sector, of which the arc faces the O-ring. The radius r of the circle forming the sector is 0.6-2.5 mm and the thickness (t0) satisfies the following formula: t1?0.2?t0?t1+0.4. In the formula, t1 is a thickness (mm) of the center ring at the point at which the center ring engages with the O-ring. The clamp-type joint can exhibit stable sealing performance at a high temperature of 250° C. or more without cracking of the O-ring.

Abstract: A sealing system has a gasket (25) which in the undeformed state can be placed against a component (1) to be sealed. In the deformed state, the gasket engages the component (1) such that the gasket (25) is captively held on the component (1).

Abstract: A seal ring 10 for sealing between first and second members 12, 14 each having an outer groove surface 16, 126 and inner groove surface 18, 127 includes a metal seal body 26, 42, 52, 60, 70, 80, 92, 110, 122, 140 for engagement with the outer groove surface on the first and second members, and a metal flexible flange 30, 32, 44, 46, 54, 56, 62, 64, 76, 78, 88, 90, 94, 96, 112, 114, 128, 144, 146 with a cantilevered end of a flexible flange providing substantially line contact sealing engagement with the inner groove surface on respective first and second member. The metal flexible flange is configured for being fluid pressure energized, and is deformed beyond its elastic limit when securing members secure the first member to the second member.

Abstract: The present invention features a flange to flange dynamic seal and sealing system, particularly suited for use within high temperature, high pressure environments, such as a delayed coking process. The dynamic flange seal and sealing system comprises two primary elements or seals, each of which are capable of independently forming a flange seal between two flanged components or combining to create a flange seal. Specifically, these primary seals are an iconel bellows seal and a bi-material gasket, each of which surround a flange opening along a sealing surface. The flange seal created by the dynamic flange seal and sealing system is capable of being maintained in light of, or rather the sealing system adapts to, any structural or environmental changes within the connected flanges. As such, the flange seal may be a dynamic flange seal or a static flange seal or both.

Abstract: A seal assembly for dividing an annular space defined between an inner and an outer pipe in a double-walled pipeline. The seal assembly comprises an annular member fitted within the annular space and at least one longitudinal conveyor passing through the annular member, wherein the longitudinal conveyor communicates with the annular space on either side of the seal assembly. The longitudinal conveyor may comprise for example an electrical conductor or an optical fiber.

Abstract: A high pressure fluid system includes a sealing mechanism, which provides a fluid seal for a cylindrical bore via pressing contact between a first convex, curved surface at an end of the cylindrical bore and a second convex, curved surface at a containment element that is coupled relative to the end of the cylindrical bore.

Abstract: The invention relates to a peripheral sealing gland to form a seat between an elongate member and a substantially flat surface. The gland has an at least in part tapered skirt or frustoconical shaped skirt through which the elongate member is to pass and defining at the upper periphery of the skirt and deformable upper seal to deform about and seal to a periphery of said elongate member. A flange depends from the lower periphery of the skirt including on its outward from the skirt presented surface, at least one endless lip to seal when brought into contact, against said substantially flat surface. A compression ring is able to bear on said flange, to be fastened to said substantially flat surface to capture the flange therebetween.

Abstract: A ferrule for use in a fluid transfer assembly having a fluid conduit includes a frusto-conical seal portion having a first cylindrical bore sized and configured to slidably receive a fluid conduit. The seal portion is formed from a first material suitable to seal the fluid conduit within a first fitting without substantially deforming the fluid conduit. A frusto-conical collet portion is mated with the seal portion and includes a second cylindrical bore in substantial alignment with the first cylindrical bore. The collet portion includes at least one axial finger extending along the tapered end that is configured to be biased into locking engagement with the fluid conduit. The collet portion is formed from a second material that substantially prevents deformation of the fluid conduit when the finger is biased into locking engagement with the fluid conduit.

Abstract: A method for testing the integrity of a plumbing system. A first step involves affixing a seal with a releasable adhesive over a component of the plumbing system having a bore to occlude the bore. A second step involves charging the plumbing system with a fluid.

Abstract: A gasket assembly includes a one-piece gasket that has a mounting end, for mounting in an opening of an associated enclosure body, and a pipe engaging end, for receiving an associated pipe. An intermediate section is located between the mounting end and the pipe engaging end. A clamp assembly is used on the pipe engaging end of the gasket. The clamp assembly is looped to assume an annular configuration. A retaining member, of one piece with the gasket, extends from a wall of the gasket, for retaining the clamp assembly to the gasket in a transport position.

Abstract: A seal ring 10 for sealing between first and second members 12, 14 each having an outer groove surface 16, 126 and inner groove surface 18, 127 includes a metal seal body 26, 42, 52, 60, 70, 80, 92, 110, 122, 140 for engagement with the outer groove surface on the first and second members, and a metal flexible flange 30, 32, 44, 46, 54, 56, 62, 64, 76, 78, 88, 90, 94, 96, 112, 114, 128, 144, 146 with a cantilevered end of a flexible flange providing substantially line contact sealing engagement with the inner groove surface on respective first and second member. The metal flexible flange is configured for being fluid pressure energized, and is deformed beyond its elastic limit when securing members secure the first member to the second member.

Abstract: A sealing arrangement of a piezoactuator (12) for a fuel injection valve of an internal combustion engine, has connecting pins (14) projecting out of the piezoactuator (12) and a head arrangement (16, 18) placed on to the piezoactuator (12), which is provided with openings (20) for the penetration of the connecting pins (14), wherein a liquid-tight sealing element (30) abuts against the outer surfaces of the connecting pins (14) on one side and also against the head arrangement (16, 18) on the other. In order to ensure a reliable seal with this arrangement, in particular also over extended periods of time, the sealing element (30) abuts against the outer surfaces of the connecting pins (14) located inside the openings (20), and sealing element sections (32) located inside the openings (20) are radially compressed in the openings.

Abstract: A combination sealing and restraint system for an as-cast ductile iron pipe systems. A ductile iron pipe/fitting with a bell end has an as-cast profile formed therein for receiving both a gripping ring and a sealing ring in spaced apart locations. The gripping ring is installed within a first recess provided as a part of the as-cast profile in a post-casting step. The sealing ring is also installed within a second, spaced recess after the casting operation is complete. The sealing ring can be a dual durometer gasket which can be flexed and inserted into the profile. The same type bell end can be provided as an adapter which converts a traditional mechanical joint restraint to an internal gripping and restrain system.

Abstract: A sealing system with sealing ring for coupling members for connecting pipes to user devices such as pumps, compressors, tanks and the like, by means of a shank that screws into a seat provided on the said user devices, comprises a groove and an annular seal. The groove, which is shaped according to the teaching of international standard ISO UNI 5711-65, is situated in a position adjacent to the shank of the coupling member, at the opposite end from the end of the shank. The groove is able to receive the annular seal designed to be pressed against an abutting wall or a flared portion of the seat of the user device in order to establish the seal. In the original configuration prior to assembly, the sealing ring is of an essentially cylindrical shape, whereas, in the configuration of compression on the groove, it assumes a shape adapted to the profile of the groove, which is generally frustoconical.

Abstract: An oil rotary vacuum pump of mechanical type (100) is filled with a requested amount of oil at the end of the manufacturing process, then it is stored and then shipped to the user, letting the user to avoid an operation of introducing the proper amount of oil into the pump. The oil leakage is prevented by securing the suction and/or exhaust ports (3, 17) of the pump, which are sealed by means of a removable sealing member, for instance by means of a membrane (21, 23).

Abstract: A one-piece water-closet gasket (21) comprises an outer gasket (39) for the stand (41) and an inner gasket (43) for sealing the outlet of the water-closet drain-duct (29) to the sewage inlet duct (37). The latter gasket comprises a tube (51) having a lower span (53) for plugging into the sewage inlet and is provided with means (55, 57) elastically bearing and sealing against the inner wall surface of the sewage duct.

Abstract: A configuration for sealing-off two fluid-carrying subassemblies, in particular for sealing-off a case, the inner space of which is filled with a first fluid and through the inner space of which there is led a pipeline filled with another fluid which flows into a construction space that is separated from the inner space filled with the first fluid by a case wall. Between a first sealing element and a second sealing element there is disposed a supporting ring, which, on each of its side faces assigned to the sealing elements, has a contour for the reception and diversion of a fluid volume which has flowed onto the supporting ring as a result of leakage in the region of the respectively assigned sealing element.

Abstract: A seal structure is disclosed, wherein a casing 10 has an annular protrusion 11 making up a hole-formed portion of a through hole 12. The portion of a joint member 30 around a joint body 31 is wound with a band-shaped seal member 60. A first peripheral end portion 60a and a second peripheral end portion 60b of the seal member 60 are formed progressively upward in the direction from the engine compartment to the passenger compartment. In the process of inserting the joint body 31 and the seal member 60 into the through hole 12 of the casing 10, the first peripheral end portion 60a and the second peripheral end portion 60b of the seal member 60 are butted against each other in the peripheral direction. As a result, a gap is difficult to form between the first peripheral end portion 60a and the second peripheral end portion 60b.

Abstract: A cover assembly for covering a vessel comprising a main cover comprising at least a first outlet opening adapted for connection to a pipe, and a second opening surrounded by a flat region adapted for placement of a gasket; an access cover comprising a flat region adapted for mating with the flat region of the main cover; and provisions for the sealing of at least one cord passing between the main cover and the access cover. In other embodiments, the cover assembly is provided with an engagement feature adapted for engagement with a hook-shaped hanger rod. Sewage basin assemblies are also provided which incorporate these cover assemblies.

Abstract: A sealing ring assembly and an improved method for mounting a sealing ring into an electrochemical cell used for Electrochemical Capacitance Voltage (ECV) profiling measurements. The ring is located in a holder having at least one secondary bore providing fluid communication between a forward face of the holder and the central bore of the ring, directed parallel to but tangentially offset relative to the inner wall of the central bore so as to impart a degree of rotational flow to electrolyte entering the sealing ring through the or each secondary bore which effectively removes gas bubbles and refreshes the electrolyte. The holder facilitates ring removal with a much reduced risk of damage to the delicate sealing surface.

Abstract: The invention relates to a dry-running piston rod sealing arrangement (1) for sealing a piston rod (2) mounted in a longitudinally displaceable manner. Said sealing arrangement comprises at least one sealing ring (5) having a sealing surface (5a), an actuator (7), a sensor (8), and a chamber ring (3) containing the sealing ring (5). The actuator (7) comprises an active connection in relation to the sealing ring (5), such that the sealing surface (5a) can be radially displaced in relation to the piston rod (2). The actuator (7) can be controlled according to a measuring value detected by the sensor (8).

Abstract: A sealing gasket for a ventilation duct system includes an annular gasket body and a pair of annular sealing flanges extending radially outwardly from the gasket body. The sealing gasket has, in axial cross-section, a generally flat top wall and a curved or, alternatively, a radiused bottom wall. One of the sealing flanges is positioned adjacent one circumferential edge of the sealing gasket and the other sealing flange is positioned axially spaced from or offset from the opposite circumferential edge of the sealing gasket. The sealing gasket is provided to form a generally air-tight seal between overlapping ends of first and second components of a ventilation duct system.

Abstract: An O-ring used in a clamp-type joint for a vacuum apparatus, which engages with a concave groove in the outer circumference edge of the center ring and is sandwiched by an outer ring having a U-shaped outer circumference, wherein the radius of the circular arc in the cross-section on the side coming into contact with the outer ring is smaller than the radius of the circular arc in the cross-section on the axial side of the joint. A clamp-type joint for the vacuum apparatus which can exhibit stable sealing performance at a high temperature of 200° C. or more without cracking of the O-ring, as well as an outer ring and O-ring used with the clamp-type joint are also provided.

Abstract: A system for closing a suction muffler of a hermetic compressor, the suction muffler including: a hollow base; a cover to be coupled to the hollow base, the parts defined by the hollow base and the cover including respective mutually seatable peripheral flanges, which are shaped to define, jointly, an internal channel extended along at least part of the circumferential extension of the peripheral flanges and which is opened to the opposite external faces of the latter by means of throughbores axially aligned to each other in pairs, each pair of throughbores maintaining a circumferential distance in relation to an adjacent pair of throughbores, the throughbores of each pair and the internal channel being filled with a gasket of injected material, which projects outwardly from the throughbores so as to define an axial lock portion.

Abstract: A permanently lubricated film gasket for providing a fluid-tight seal between a corrugated pipe and a smooth annular section of an outer pipe or section when the corrugated pipe and the outer pipe or section are in a relative surrounded and surrounding relationship. A first portion of the gasket is shaped to fit within a groove or recess of the corrugated pipe. A second portion of the gasket extends from the first portion. The second portion is at least partially comprised of permanently lubricated film for facilitating in the connection of the pipes along a single direction.

Abstract: A volumetric sealing system has an outer housing a section having an interior region and a pair of outlets in communication with the interior region. The outer housing section includes an interior surface surrounding the interior region. The volumetric sealing system also has an inner housing section having a first portion disposed within the interior region of the outer housing section and a second portion external to the interior region of the outer housing section. The inner housing section has an exterior surface that contacts the interior surface of the outer housing section. The inner housing section has an interior region for the flow of matter therethrough. The first portion of the inner housing section has an outlet in communication with the interior region of the inner housing section to allow matter to flow from the interior region of the inner housing section to the interior region of the outer housing section.

Abstract: The invention relates to a flexible sealing element sealingly attached to a cable intended for connection to attachment means on e.g. the roof of a base station cabinet. When attaching the cable the front end of the sealing element is retracted to a position uncovering connecting means at the cable end. After attachment the front end is moved back to a position covering the connected cable end.

Abstract: The invention provides a plug for sealing an end of a duct. The plug includes a sealing member for sealing against an interior surface of the duct, and gripping means having one or more teeth for gripping the interior surface of the duct. The plug may include a pair of opposed camming surfaces arranged for relative axial movement therebetween whereby the relative axial movement results in the teeth of the gripping means being urged radially outwardly into gripping engagement with the interior surface of the duct.

Abstract: The ring seal and retainer assembly includes an annularly shaped ring seal defining a radial inner surface, a radial outer surface, first and second axial end surfaces and a central bore for fluid or gas passage. A retainer is provided for affixing and positioning a ring seal in a sealing assembly. The retainer includes a circular sidewall sized and positioned to engage and cover the ring seal's radial outer surface. The retainer includes an arcuate flange which extends at one of the retainer's axial extremities to form a concave interior and a convex exterior. Preferably, the arcuate flange extends outwardly to increase the retainer's radius and the arcuate flange is sized to compressibly engage the interior sidewall of the component block's counterbore.

Abstract: A restraining gasket for both sealing and preventing separation of a pipe joint used to join a bell end of a female ductile iron pipe to the male end of a mating ductile iron pipe. The gasket has a body formed from a compressible elastomeric material having a hardened metal ring located therein with gripping teeth. The hardened ring has an opening at one point in its circumference which is filled with rubber. The rubber-filled gap ensures that the gasket body seals first prior to engagement of the gripping teeth as the pipe joint is assembled.

Abstract: A composite sleeve seal for sealing a conduit connection including a body portion having collar sections spaced apart from one another to define gaps therebetween, and being interconnected to one another by link segments spanning the gaps. A seal portion interposes the collar sections in the gaps and surrounds the link segments to positively interlock the seal portion with the body portion to form the composite sleeve seal as one integral component.

Abstract: A plug-in connector comprising a base body (6), an annular sealing element (12), a clamping ring (50) and an annular body (20) which can be connected to the base body (6). A pipe end (4, 5) against which the sealing element (12) is arranged in a sealing manner, can be secured in the plug-in connector by the clamping ring (50). The plug-in connector of the invention can be connected to an end (4, 5) of at least one pipe in a simple manner and with a high degree of functional reliability, excluding the risk of assembly errors. For this purpose, the sealing ring (12) is arranged in an annular groove (14) of the base body (6) and comprises two sealing beads (60, 62) which are situated against the inner surface of the inserted pipe end (4, 5) in the manner of two o-ring seals.

Abstract: To provide a seal for a conducting element (3) which is positioned eccentrically in a through-hole (2) in a housing wall (1), a proposal is made for a sealing body (8) which can be moved in a radial direction (11) and which can be fixed after assembly of the conducting element (3) by means of a clamping device (19).

Abstract: The invention relates to a sealing ring (1) for push-fit socket connections. The sealing ring (1) is characterized by consisting of a high-quality elastomeric plastic material or an elastomer as an element of the scaling ring and comprises, on the seal base, an end piece (2) from a harder plastic material, such as PP, as the care which is at least partially surrounded by the sealing material (3), thereby forming a base element. The end piece (2) as the core of the inserted sealing (1) is associated, at the seal base in the direction of insertion of the pipe, with the bead (5) and its end section is configured without sealing material (3) at the seal base.

Abstract: A seal/retainer unit (10) comprising an annular sealing gasket (12) and a plurality of retaining legs (14) extending generally perpendicularly therefrom. The sealing gasket (12) and the retaining legs (14) are formed in one piece (e.g., stamped) from a sealing material and dimensioned to allow nesting of a plurality of seal/retainer units (10) in a stacked arrangement. The retaining legs (14) may each include a rounded distal edge (16) to minimize package-tearing and interpart-marking and/or a break-off notch (18) to allow special customization. A radiused corner (20) between the gasket (12) and the legs (14) assures a gap between nested parts.

Abstract: In order to provide a supply and exhaust pipe comprising a drop-off prevention mechanism, particularly effective for pipes with a large diameter, to increase bending strength and sealing efficiency, formation of a hemmed section A at an top edge of an insert portion 4 can eliminate the occurrence of buckling and increase bending strength. Furthermore, an O-ring for sealing can improve sealing efficiency and also can make itself follow a deformation of the pipe by forming it into a mushroom shape to establish close contacts to the pipe at two points, namely a neck 8b and a part of the circumference 8c of a cap 8a. Furthermore, a drop-off prevention mechanism of the pipe has a wide sliding piece 12, and an arc 17 with a curvature adapted to the curvature of the pipe is formed on the lower surface of the sliding piece 12, to stabilize its sliding.

Abstract: An expansion gasket 10 positionable between similar or dissimilar materials having an exterior exposure to the elements. In the preferred embodiment, the expansion gasket of the present invention 10 provides means to seal a space occurring between mated articles such as walls and windows, doors, electrical outlets, lighting fixtures, fans, ventilation grille, etc. The gasket 10 may have one or two bases 60, 62 and various shapes including 52, 54.

Abstract: An annular gasket for affecting a watertight seal between two sections of corrugated pipe. The gasket comprises a seating portion dimensioned to fit within an annular recess in one of the mated sections of corrugated pipe, and a sealing portion integrally molded with the seating portion. The sealing portion includes a first shoulder portion, a second shoulder portion, and an arcuate surface extending between the first and second shoulder portions. The mass of the seating portion is less than the mass of the sealing portion.

Abstract: This invention provides a device for use with sealing an orifice in a wall, comprising: a first annular member having an interior radius and a radial mating surface; a second annular member disposed on the first annular member opposite the radial mating surface and being axially aligned with the first annular member; a plurality of mounting portions disposed on the interior radius of the first annular member such that each mounting portion is substantially flush with the radial mating surface, wherein each mounting portion has a fastener orifice; and, an alignment pin disposed on at least one of the plurality of mounting portions, the alignment pin is substantially parallel to an axis of the first annular member. This invention also provides a device for use with sealing orifices wherein the alignment pin includes a spring biased securing end.

Abstract: A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provided in at least one peripheral region with a first predetermined breaking site and being capable of being severed along the first predetermined breaking site by pulling on the holding device, the protective ring being closed off in sealing manner by a disk-shaped lid.

Abstract: An apparatus for joining the ends of a pair of ribbed ducts together has a collar with an interior suitable for receiving the ends of the pair of ducts therein, a first coupler element translatably secured adjacent a first end of the collar, a compressible seal disposed between a surface of the first coupler element and the first end of the collar, a second coupler element secured adjacent a second end of the collar, and a second seal disposed between a surface of the second coupler element and the second end of the collar. The coupler elements are translatable so as to compress the seal such that a surface of the seal will bear against a respective rib of the pair of ducts.