A sealing system including a first end and a second end with flexible bellows extending therebetween. The first end includes a base plate with an inner ring having an inner diameter. The inner ring is configured to receive a pipe therethrough. The pipe has an outer diameter, which is smaller than the inner diameter of the inner ring. The bellows of the sealing system has a first length in a first position and second length in a second position. Upon axial expansion of the pipe, the bellows is configured to move from the first position to the second position. The sealing system may also comprise a mechanical protective element, such as a shroud which extends around the bellows. Movement of the bellows can be further limited with rods extending from the shroud to a surrounding substrate or a cable fixing a maximum distance between the pipe and the shroud.

System for providing a conduit sealingly to a through-opening in a plate-shaped construction element so that at least one pipe and/or cable can extend through the conduit and so that after sealing remaining space in the conduit a completely sealed-off pipe and/or cable penetration through the plate-shaped construction element is obtained, wherein the system is such that it is mechanically mountable, wherein the system is further such that it is mountable from only one side of the plate-shaped construction element, by only one worker.

Provided is a grommet that can improve the water-blocking property. A grommet includes an opposing portion 32 that opposes a portion surrounding a mounting hole 12 in a vehicle body panel 11, a first water-blocking portion 33 that extends from the opposing portion 32 and comes in contact with the vehicle body panel 11, and a second water-blocking portion 34 that extends from the opposing portion 32 and comes in contact with the vehicle body panel 11. Each of the first water-blocking portion 33 and the second water-blocking portion 34 is formed in an annular shape that surrounds the mounting hole 12. The second water-blocking portion 34 is provided on the outer circumferential side with respect to the first water-blocking portion 33.

Provided is a grommet that can improve the water-blocking property. A grommet includes an opposing portion 32 that opposes a portion surrounding a mounting hole 12 in a vehicle body panel 11, a first water-blocking portion 33 that extends from the opposing portion 32 and comes in contact with the vehicle body panel 11, and a second water-blocking portion 34 that extends from the opposing portion 32 and comes in contact with the vehicle body panel 11. Each of the first water-blocking portion 33 and the second water-blocking portion 34 is formed in an annular shape that surrounds the mounting hole 12. The second water-blocking portion 34 is provided on the outer circumferential side with respect to the first water-blocking portion 33.

A covering is provided to cover an opening in a surface through which a tubular member extends. The covering includes a base of a predetermined thickness and which is larger in diameter than the tubular member. The base defines an aperture which coincides with a central axis of the base. The base has a medial portion which tapers such that an outer diameter of the medial portion exceeds an inner diameter of the medial portion adjacent to the aperture. The aperture coincides with a central axis of the medial portion. A ring is disposed between the inner diameter of the medial portion and the aperture. A plurality of teeth are arranged circumferentially around the ring away from the medial portion, are spaced from each other and project inward from the medial portion, and are structured to grip the tubular member so as to secure the tubular member in place.

A covering is provided to cover an opening in a surface through which a tubular member extends. The covering includes a base of a predetermined thickness and which is larger in diameter than the tubular member. The base defines an aperture which coincides with a central axis of the base. The base has a medial portion which tapers such that an outer diameter of the medial portion exceeds an inner diameter of the medial portion adjacent to the aperture. The aperture coincides with a central axis of the medial portion. A ring is disposed between the inner diameter of the medial portion and the aperture. A plurality of teeth are arranged circumferentially around the ring away from the medial portion, are spaced from each other and project inward from the medial portion, and are structured to grip the tubular member so as to secure the tubular member in place.

A pipe connector includes a pipe fitting including a passageway extending between upstream and downstream ends. An annular seat is formed within the passageway. A grommet includes a cylindrical portion and a conical portion extending from the cylindrical portion. A passageway extends through the cylindrical conical portions. With the grommet disposed within the passageway of the pipe fitting spaced from the upstream end, the cylindrical portion engages the annular seat and the conical portion extends along an inner wall of the pipe fitting between the annular seat and the downstream end. When an upstream pipe is received through the upstream end and along the passageway of the grommet, the conical portion compresses between and seals against the upstream pipe and the inner wall. With the downstream end of the pipe fitting connected to a downstream pipe, the pipe fitting and grommet fluidly connect the upstream pipe and the downstream pipe.

A pipe connector includes a pipe fitting including a passageway extending between upstream and downstream ends. An annular seat is formed within the passageway. A grommet includes a cylindrical portion and a conical portion extending from the cylindrical portion. A passageway extends through the cylindrical conical portions. With the grommet disposed within the passageway of the pipe fitting spaced from the upstream end, the cylindrical portion engages the annular seat and the conical portion extends along an inner wall of the pipe fitting between the annular seat and the downstream end. When an upstream pipe is received through the upstream end and along the passageway of the grommet, the conical portion compresses between and seals against the upstream pipe and the inner wall. With the downstream end of the pipe fitting connected to a downstream pipe, the pipe fitting and grommet fluidly connect the upstream pipe and the downstream pipe.

An embedded fire-resistant device includes a mounting plate, a container and a fire-resistant member. The mounting plate has a contact surface and a first connection member provided on the mounting plate. The container has an open side and a second connection member provided on the open side. The fire-resistant member is received in the container. The first connection member and the second connection member are configured to slidably couple to or separate from each other so that the mounting plate and the container can engage with or separate from each other. This is a design that benefits in installation and future inspection.

An embedded fire-resistant device includes a mounting plate, a container and a fire-resistant member. The mounting plate has a contact surface and a first connection member provided on the mounting plate. The container has an open side and a second connection member provided on the open side. The fire-resistant member is received in the container. The first connection member and the second connection member are configured to slidably couple to or separate from each other so that the mounting plate and the container can engage with or separate from each other. This is a design that benefits in installation and future inspection.