A sealing device comprising: an axially deformable tubular membrane (4) having a first annular end and a second annular end (8), a first annular coupling ring (5; 205) rigidly connected to the first end of the tubular membrane and having a lateral annular wing (10) providing an axial annular attachment space (12) that is axially open on the side of the second annular end of the tubular membrane and is radially located on a lateral side of the tubular membrane, and a second coupling ring (7) rigidly connected to the second end of the tubular membrane and having a projecting lateral annular ring (14) axially extending opposite the first annular end of the tubular membrane and radially offset opposite said axial annular attachment space relative to said lateral side of the tubular membrane. An assembly comprising two coaxial ducts (2, 3) engaged together, between which the sealing device is mounted.

The modular tubular exhaust system includes a first tubular body, a second tubular body and at least one third tubular body connecting to form, a fully assembled configuration, a vertically arranged exhaust pipe. The first, the second, and the third tubular bodies each have a tubular body first end and a tubular body second end where the first ends and second ends are configured to mate with each other to form the vertically arranged exhaust pipe. The system further includes tabs that extend radially outward on opposing sides of the tubular bodies to allow a plurality of fasteners to attach tubular bodies together when arranged in the vertical configuration. The assembled configuration may vary within the spirit and scope of the disclosure, for example, in some embodiments, the system may only have a first and a second tubular section or a first, second, and a plurality of third tubular sections.

The modular tubular exhaust system includes a first tubular body, a second tubular body and at least one third tubular body connecting to form, a fully assembled configuration, a vertically arranged exhaust pipe. The first, the second, and the third tubular bodies each have a tubular body first end and a tubular body second end where the first ends and second ends are configured to mate with each other to form the vertically arranged exhaust pipe. The system further includes tabs that extend radially outward on opposing sides of the tubular bodies to allow a plurality of fasteners to attach tubular bodies together when arranged in the vertical configuration. The assembled configuration may vary within the spirit and scope of the disclosure, for example, in some embodiments, the system may only have a first and a second tubular section or a first, second, and a plurality of third tubular sections.

An exemplary insulator for a flue of a residential oven includes a bendable insulating body having a first end, a second end, and a bending portion. A first cut is disposed between the bending portion and the first end and a second cut is disposed between the bending portion and the second end. The first cut is expandable to form a first opening and the second cut is expandable to form a second opening.

An exemplary insulator for a flue of a residential oven includes a bendable insulating body having a first end, a second end, and a bending portion. A first cut is disposed between the bending portion and the first end and a second cut is disposed between the bending portion and the second end. The first cut is expandable to form a first opening and the second cut is expandable to form a second opening.

An exemplary insulator for a flue of a residential oven includes a bendable insulating body having a first end, a second end, and a bending portion. A first cut is disposed between the bending portion and the first end and a second cut is disposed between the bending portion and the second end. The first cut is expandable to form a first opening and the second cut is expandable to form a second opening.

An exemplary insulator for a flue of a residential oven includes a bendable insulating body having a first end, a second end, and a bending portion. A first cut is disposed between the bending portion and the first end and a second cut is disposed between the bending portion and the second end. The first cut is expandable to form a first opening and the second cut is expandable to form a second opening.

An exhaust adapter secures an exhaust tube relative to an exhaust pipe. The exhaust adapter is formed to have an annular shape enclosing a through hole, and is mounted on the outer peripheral surface of the exhaust tube and on the inner peripheral surface of the exhaust pipe by inserting the exhaust tube into the through hole. When the exhaust adapter is being fitted on the outer peripheral surface of the exhaust tube, the inner peripheral surface of the exhaust adapter presses the outer peripheral surface of the exhaust tube, and when the exhaust adapter is being fitted on the inner peripheral surface of the exhaust pipe, the outer peripheral surface of the exhaust adapter presses the inner peripheral surface of the exhaust pipe.

An exhaust adapter secures an exhaust tube relative to an exhaust pipe. The exhaust adapter is formed to have an annular shape enclosing a through hole, and is mounted on the outer peripheral surface of the exhaust tube and on the inner peripheral surface of the exhaust pipe by inserting the exhaust tube into the through hole. When the exhaust adapter is being fitted on the outer peripheral surface of the exhaust tube, the inner peripheral surface of the exhaust adapter presses the outer peripheral surface of the exhaust tube, and when the exhaust adapter is being fitted on the inner peripheral surface of the exhaust pipe, the outer peripheral surface of the exhaust adapter presses the inner peripheral surface of the exhaust pipe.

Disclosed are a flue pipe separation sensing apparatus and a boiler including the same. The flue pipe separation sensing apparatus of a boiler for sensing separation of an exhaust flue pipe that is fitted with and coupled to an exhaust adapter provided in an exhaust opening of a boiler body includes a sensing member located on an outer side of the exhaust flue pipe in a state, in which the exhaust flue pipe is coupled to the exhaust adapter, and that passes through the exhaust adapter by an elastic force and proceed into an interior of the exhaust adapter to sense the separation of the exhaust flue pipe when the exhaust flue pipe is separated from the exhaust adapter.