An assembly configured to be press joined with a pipe by a pressing tool includes a piping component, which includes a body, a first end having a rim and an inner surface having a plurality of grooves, and a sealing recess wall positioned between the first end and the body and defining a sealing recess. The assembly also includes a sealing element received within the sealing recess of the piping component and having a sealing element thickness. The sealing element thickness of the sealing element is about equal to and not less than a Minimum Sealing Element Thickness Value of the sealing element.

A caulking die according to an embodiment of the present invention includes an end surface being connected to each of an upper surface and a lower surface. The end surface includes a first protruded part including a first top portion, a recessed groove, and a second protruded part including a second top portion in sequential order from the lower surface side toward the upper surface side. A length of the second top portion is larger than a length of the first top portion, and a height of the second protruded part is larger than a height of the first protruded part in a cross-sectional view perpendicular to a width direction of the end surface. A caulking tool includes the caulking die. A method for manufacturing a caulking joint uses the caulking tool.

A pipe retaining device comprises a base panel; a clamping member coupled to the base panel and including a flexible part; and an adjusting member disposed outside the clamping member. The adjusting member includes a plurality of retaining portions adjacent to the flexible part and is moveable relative to the clamping member such that the flexible part is selectively engaged with one of the retaining portions.

An assembly configured to be press joined with a pipe by a pressing tool includes a piping component, which includes a body, a first end having a rim and an inner surface having a plurality of grooves, and a sealing recess wall positioned between the first end and the body and defining a sealing recess. The assembly also includes a sealing element received within the sealing recess of the piping component and having a sealing element thickness. The sealing element thickness of the sealing element is about equal to and not less than a Minimum Sealing Element Thickness Value of the sealing element.

An assembly configured to be press joined with a pipe by a pressing tool includes a piping component, which includes a body, a first end having a rim and an inner surface having a plurality of grooves, and a sealing recess wall positioned between the first end and the body and defining a sealing recess. The assembly also includes a sealing element received within the sealing recess of the piping component and having a sealing element thickness. The sealing element thickness of the sealing element is about equal to and not less than a Minimum Sealing Element Thickness Value of the sealing element.

A tube-attached coupling structure is provided by using a piping coupling with good compatibility, workability and processability. A manufacturing method of the tube-attached coupling structure includes a step of preparing a photocurable gel-like body in a hollow cylindrical shape, a step of fitting the photocurable gel-like body in the attaching hole, a step of inserting an end portion of a connection tube into a hollow hole of the photocurable gel-like body, and a step of curing the photocurable gel-like body by irradiating the photocurable gel-like body with light.

A caulking die according to an embodiment of the present invention includes an end surface being connected to each of an upper surface and a lower surface. The end surface includes a first protruded part including a first top portion, a recessed groove, and a second protruded part including a second top portion in sequential order from the lower surface side toward the upper surface side. A length of the second top portion is larger than a length of the first top portion, and a height of the second protruded part is larger than a height of the first protruded part in a cross-sectional view perpendicular to a width direction of the end surface. A caulking tool includes the caulking die. A method for manufacturing a caulking joint uses the caulking tool.