The present disclosure relates to an apparatus for connecting to the end of a duct, the apparatus comprising: an outer ring having a central axis (C) and an inner surface extending between a first axial end and a second axial end of the outer ring; and an inner ring positioned within the outer ring and having a central axis (C) and an outer surface extending between a first and second axial end of the inner ring. A gap is provided between the outer surface of the inner ring at its first end and the inner surface of the outer ring at its first end, the gap extending in the direction of the second ends of the inner and outer rings.

A coupling assembly having first and second sleeves configured to be tightened to a fluid conduit, a radial-split gasket configured to be positioned between the sleeves and the fluid conduit and having an outer gasket layer and a separate inner gasket layer configured to be selectively disengaged from each other, the outer gasket layer having a radial gap defined by first and second radial side wall gap surfaces, the inner gasket layer having a radial gap and a radial insert configured to be received in the radial gap of the outer gasket layer between the first and second radial side wall gap surfaces.

A coupling assembly having first and second sleeves configured to be tightened to a fluid conduit, a radial-split gasket configured to be positioned between the sleeves and the fluid conduit and having an outer gasket layer and a separate inner gasket layer configured to be selectively disengaged from each other, the outer gasket layer having a radial gap defined by first and second radial side wall gap surfaces, the inner gasket layer having a radial gap and a radial insert configured to be received in the radial gap of the outer gasket layer between the first and second radial side wall gap surfaces.

A pipe sealing gasket is shown which is designed to be received within a raceway provided within the female, belled end of a section of plastic pipe which is assembled with a mating male pipe end to form a plastic pipe joint. The gasket is made up of a hard plastic band having an outer circumferential surface and an inner circumferential surface, and two separated elastomer portions. A first of the separated elastomer portions forms an outer ring which circumscribes the outer circumferential surface of the hard plastic band. The second of the separated elastomer portions forms an inner lip which circumscribes the inner circumferential surface of the hard plastic band. The two separate elastomer portions are connected during the gasket molding operation by a series of spaced ribs which form a continuous body of elastomer connecting the first and second separated elastomer portions at spaced intervals.

A pipe sealing gasket is shown which is designed to be received within a raceway provided within the female, belled end of a section of plastic pipe which is assembled with a mating male pipe end to form a plastic pipe joint. The gasket is made up of a hard plastic band having an outer circumferential surface and an inner circumferential surface, and two separated elastomer portions. A first of the separated elastomer portions forms an outer ring which circumscribes the outer circumferential surface of the hard plastic band. The second of the separated elastomer portions forms an inner lip which circumscribes the inner circumferential surface of the hard plastic band. The two separate elastomer portions are connected during the gasket molding operation by a series of spaced ribs which form a continuous body of elastomer connecting the first and second separated elastomer portions at spaced intervals.

The invention relates to a cable sealing device comprising: a first plate having a group of first holes and configured to be mounted to a first side of a housing wall; a second plate having a group of second holes and configured to be mounted to a second side of a housing wall; and a soft elastic sealing element configured to be mounted between one of the first and second plates and the housing wall. The group of first holes and the group of second holes and the sealing element are configured to receive a group of cables, and the first and the second plate can be biased toward each other, so that the sealing element can be pressed and elastically deformed. The sealing element can seal and fix the group of cables in the housing wall in a pressed and elastically deformed status. The invention also relates to a cable sealing system comprising a housing wall and the cable sealing device. The cable sealing device is simple in structure and easy to assemble, and can ensure good sealing and fixing of the cables.

An electrically isolating gasket is disclosed wherein a coating layer is disposed on at least one conductive surface, and in some embodiments, on all surfaces or at least all of the conductive surfaces. The electrically isolating gasket includes a core gasket component, a ring seal component, and a non-conductive inner seal component. The coating layer can be, for example, polyimide, polyamide, ceramic, and aluminum oxide.

A quick connection clamping hoop, including an upper clamping hoop body and a lower clamping hoop body that are both in a semi-annular shape; where the upper clamping hoop body and the lower clamping hoop body each have one end as a plug connecting end and the other end as a connecting end; connecting ends of the upper clamping hoop body and the lower clamping hoop body each are provided with a lug, and the connecting ends of the two are connected together via a bolt passing through lugs; plug connecting ends of the two are connected together via a plug connecting mechanism disposed at the plug connecting ends of the two. A clamping hoop in this structure is assembled and connected to a pipe quickly, and is convenient for use, which can greatly improve production efficiency of the clamping hoop and efficiency of pipe connection.

The invention relates to a method for connecting a connection section (33) of a hose (3) with a plug-in connector (4). The plug-in connector (4) comprises a connector body (6), which connector body (6) has a ring space (22). In a first method step, the connection section (33) is pushed into the ring space (22) of the plug-in connector (4) of the hose (3) from the hose accommodation side (25) of the connector body (6), and positioned there; in a second method step, a pressing tool (50) deforms the first mantle section (12) of the connector body (6).

The second mantle section (15) has a narrowing (39) at a front edge (38) of the hose accommodation side (25), whereby it is ensured that the connection section (33) of the hose (3) is freely deformed in the direction of the second mantle section (15) during the pressing process, at least in the region of the ring space (22) that is at a distance from the front edge (38), before the connection section (33) of the hose (3) comes to lie against the second mantle section (15).

The invention relates to a method for connecting a connection section (33) of a hose (3) with a plug-in connector (4). The plug-in connector (4) comprises a connector body (6), which connector body (6) has a ring space (22). In a first method step, the connection section (33) is pushed into the ring space (22) of the plug-in connector (4) of the hose (3) from the hose accommodation side (25) of the connector body (6), and positioned there; in a second method step, a pressing tool (50) deforms the first mantle section (12) of the connector body (6).

The second mantle section (15) has a narrowing (39) at a front edge (38) of the hose accommodation side (25), whereby it is ensured that the connection section (33) of the hose (3) is freely deformed in the direction of the second mantle section (15) during the pressing process, at least in the region of the ring space (22) that is at a distance from the front edge (38), before the connection section (33) of the hose (3) comes to lie against the second mantle section (15).