EP3014148A1

EP3014148A1 - Sealing assembly for flat flange connections

Info

Publication number: EP3014148A1
Application number: EP14723997.4A
Authority: EP
Inventors: Alfred Jung
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-25
Filing date: 2014-04-28
Publication date: 2016-05-04
Also published as: DE202013005717U1; WO2014206510A1; BR112015029452A2; CN105229347A; US20160010748A1

Abstract

The invention relates to a sealing assembly for flat flange connections which comprises an annular metal main body (1), which is composed of a metal sheet, and annular soft-material supports (2) on the two sides. Teeth or corrugations (3, 4, 5, 6) are annularly impressed into the metal main body (1). The sealing assembly has the following dimension combination in the original state thereof before the installation into the flange connection: the metal sheet thickness of the metal main body (1) is at least 0.5 mm, preferably at least 0.6 mm, more preferably at least 0.8 mm, and even more preferably at least 1.0 mm. The metal sheet thickness of the metal main body (1) is at most 1.5 mm and preferably at most 1.2 mm. The distance between the vertices (3a, 4a, 5a, 6a) of each pair of adjacent annular teeth (3, 4, 5, 6) pointing in the same direction is greater than 3 mm and preferably greater than 4 mm. The thickness of the metal main body (1) measured over the vertices (3a, 4a, 5a, 6a) of the annular teeth (3, 4, 5, 6) is at least 2 mm and preferably at least 3 mm. The thickness of the metal main body (1) measured over the vertices (3a, 4a, 5a, 6a) of the annular teeth (3, 4, 5, 6) is at most 6 mm, preferably at most 5 mm, and even more preferably at most 4 mm.

Description

Sealing arrangement for flat flange connections

The invention relates to a sealing arrangement for flat flange with a consisting of a metal annular annular body and both sides existing annular Weichstoffauflagen, wherein in the metallic body annular teeth or waves are impressed.

Such embossed sealing arrangements, ie those not produced by machining, are already known as such in various variations from the prior art, for example from EP 1 062 442 B1 or from EP 1 974 158 B1. However, the known from the two above-mentioned Dmckschriften gaskets are designed and suitable only for narrow Flanschblattspalten of about 2 mm. For wider flange pitches, those known in the art do not work.

The invention is therefore based on the object to add to these known from the prior art variations, another well-functioning variant, which is suitable for use in wide Flanschblattspalten, i. in Flanschblattspalten of about 5 mm and larger, is designed.

According to the invention, this object is achieved by a sealing arrangement for flat flange connections with an annular metallic base body consisting of a sheet metal and annular soft material overlays provided on both sides, in which annular teeth or corrugations are embossed in the metallic base body and the sealing arrangement in its original state prior to installation in the flange connection is characterized by the following dimension combination:

the sheet metal thickness of the metallic base body is at least 0.5 mm, preferably at least 0.6 mm, more preferably at least 0.8 mm and even more preferably at least 1.0 mm, the sheet metal thickness of the metallic base body is at most 1.5 mm and preferably at most 1.2 mm,

the distance between the vertices of each two adjacent annular teeth pointing in the same direction is greater than 3 mm and preferably greater than 4 mm,

the thickness of the metallic base body measured over the vertices of the ring teeth is at least 2 mm and preferably at least 3 mm, the thickness of the metallic base body measured over the apexes of the ring teeth is at most 6 mm, preferably at most 5 mm and more preferably at most 4 mm,

the two-sided existing soft material supports are each at least 1.5 mm, preferably in each case at least 2.0 mm and more preferably in each case at least 3.0 mm thick and

the two-sided existing soft material pads are each at most

3.5mm thick.

According to the invention the above-mentioned object is also achieved by a sealing arrangement for flat flange with an annular metallic base body consisting of a metal sheet and existing annular soft material pads on both sides, wherein four teeth or shafts, each with substantially the same engraving depth are embossed in the metallic base body such that each pointing two of them in the same direction, so that seen in cross section, two of said four teeth or shafts face upward and two of said four teeth or shafts down, and there are no teeth or shafts except the four said teeth or shafts which are as high as or higher than the four said teeth or shafts, the metallic base body, as seen in cross-section through the four said teeth or shafts, extending in the radial ring plane of the seal arrangement e is a line or an oblique straight line intersecting the radial ring plane of the seal assembly, or having a stepped embossed shape or a serrated or embossed shape or an embossed shape of any other shape, and the seal assembly in its original condition prior to installation in FIG the flange connection is characterized by the following dimension combination: the sheet metal thickness of the metallic base body is at least 0.5 mm, preferably at least 0.6 mm, more preferably at least 0.8 mm and even more preferably at least 1.0 mm,

the sheet metal thickness of the metallic base body is at most 1.5 mm and preferably at most 1.2 mm,

the distance between the vertices of the two pointing in the same direction of said four ring teeth is greater than 3 mm and preferably each greater than 4 mm,

the thickness of the metallic base body measured over the vertices of said four ring teeth is at least 2 mm and preferably at least 3 mm,

the thickness of the metallic base body measured over the vertices of said four ring teeth is at most 6 mm, preferably at most 5 mm and more preferably at most 4 mm,

the two-sided existing soft material pads are each at most

3.5mm thick.

With regard to the embodiment of the sealing arrangement according to the invention mentioned in the preceding paragraph, particularly such embodiments are particularly advantageous in which the soft material supports are located at least within the area bounded by the four teeth or shafts mentioned. Each individual vertex of the four mentioned teeth or waves, regardless of the state of the other vertex covered with soft material support or free of soft tissue support and rounded or not rounded.

For all embodiments of inventive sealing arrangements applies that neither the annular soft material pads nor the Zahnprägungen must extend in any case over the entire radius of the annular metallic body, although there are also such embodiments of inventive sealing arrangements. In addition, it should be expressly noted in relation to all embodiments of inventive sealing arrangements that it is not absolutely necessary that each ring tooth is covered with soft material support, although there are also such embodiments of the seal assembly according to the invention. In general, it is even preferable that at least two of the highest ring teeth on each side of the seal are not covered with soft material support, so that in the installed state of the seal assembly each result in a metallic contact between the respective ring tooth and the respective flange. Preferably, then also soft material support is present in the area between those last-mentioned ring teeth, so that in the installed state of the seal arrangement results on both sides in each case a triple seal: metallic inside, metallic outside and in between soft material seal.

Furthermore, it is expressly noted that it is not absolutely necessary that any of the ring teeth is completely covered with soft material support, although there are also such embodiments of the seal assembly according to the invention, in which one or more ring teeth are completely covered with soft material support.

Although according to the above-mentioned embodiment of the seal assembly according to the invention at least two ring teeth and according to the above second embodiment, at least four ring teeth must be present, but the seal assemblies of the invention may also have far more ring teeth or shafts. The total number of ring teeth or shafts is ultimately limited only by the particular actual overall diameter of the individual seal assembly. This can be, depending on the size of the flange to be sealed, from a few centimeters to a few meters.

In a preferred embodiment of the sealing arrangement according to the invention, the metallic base body is embossed so that it seen in the region of the soft material supports in cross-section the shape of two mutually with a common leg mutually lying and each considered not gleichschenkliger angle or a non-even-toothed Sägezahnkurve with correspondingly different steep flanks has, wherein each individual part formed by the metallic base body or each formed by the metallic base tooth tip regardless of the corresponding state of the other formed by the metallic body crest or tooth tips covered with soft material support or free of soft material support and rounded or not rounded. The term "non-even-legged" in the present context means that one leg of the respective angle is shorter than the other leg of the respective angle, and in that therefore each of the two angles has an asymmetry.

A particularly advantageous and preferred embodiment of the sealing arrangement according to the invention is set up so that the legs of the two non-equiangular angles other than the common leg are each separately at an angle of 45 ° to 90 °, preferably 55 ° to 65 ° or 60 ° or 60 ° ° to 90 °, more preferably from 75 ° to 90 °, more preferably from 80 ° to 90 ° and even more preferably from 85 ° to 90 ° or from 90 ° to the radial ring plane of the seal assembly form, so that the metallic body in the area The above-mentioned radial ring plane of the sealing arrangement is a plane which runs in the installed state of the sealing arrangement parallel to the Flanschblattflächen on which rests the seal assembly.

Preferably, the different leg of the two legs of the non-isosceles angle different from the common leg are shorter than the common leg.

Furthermore, the legs of the two non-equiangular angles, which are different from the common leg, are preferably of essentially the same length.

Further advantageous and preferred embodiments of the sealing arrangement according to the invention are the subject matter of claims 8 to 15.

Embodiments of the sealing arrangements according to the invention are explained below with reference to figures. It shows:

1 shows in cross-section schematically a half of a first embodiment of a seal assembly according to the invention in the original state before installation in a flange,

2 is a schematic cross-sectional view of the exemplary embodiment of FIG. 1 in the state installed in the flange, wherein metallic contact between the sealing arrangement and the flange is produced, FIG. 3 shows a second embodiment in cross section when installed, which is similar to that of FIGS. 1 and 2, but has no metallic contact with the flange.

Fig. 4 in cross-section schematically a half of a metallic base body of a third embodiment of the seal assembly according to the invention and

Fig. 5 in cross-section schematically a half of the metallic base body of a fourth embodiment of the seal assembly according to the invention.

All figures show purely schematic and not to scale representations of essential parts of particularly preferred embodiments of the seal assemblies of the invention. It will be readily apparent to those skilled in the art that both the inventive definition of the seal assembly of claim 1 and the inventive definition of the seal assembly of claim 2 encompass far more embodiments than the preferred embodiment examples below.

FIGS. 1 to 3 show the cross-section of a respective sealing arrangement according to the invention that extends in an annular manner before (FIG. 1) or after (FIG. 2 and 3) installation in a flange. Figures 4 and 5 each show only the cross section of a respective annular circumferential metallic body 1 of a seal assembly according to the invention. The inventively necessarily on the metallic base body 1 on both sides always present soft material supports 2 are omitted in the illustrations of Figures 4 and 5 for reasons of clarity.

In all five figures, the left side is the side facing the medium to be sealed, and the right side is the atmosphere facing side of the seal assembly. Thus, only the right half of the complete sealing cross section (FIGS. 1 to 3) or only the right half of the complete cross section of the metallic base body 1 (FIGS. 4 and 5) is shown in the figures, whereby the illustration of the left half is unnecessary because it is simply mirror-symmetrical to the right half shown. In other words, in a circulation around the ring formed by the sealing arrangement according to the invention, the sealing cross-section is the same at any point. The side facing the medium to be sealed is hereinafter also referred to by the word "inside", since it faces the pipe or flange interior, and accordingly the side facing the atmosphere is also referred to below with the word "outside".

The exemplary embodiments of the inventive sealing arrangement for flat flange connections shown in the figures have an annular metallic base body 1. On both sides of the metallic base body 1, annular circulating soft material supports 2 are arranged (not shown in FIGS. 4 and 5 for the sake of clarity). The soft cloth overlays 2 in the illustrated embodiments are made of graphite and have the original state of the seal assembly, i. before installing the seal assembly in a flanged joint, a density of at least 0.7 g / cm and at most 1.5 g / cm.

In other embodiments of inventive sealing arrangements, the soft material supports 2 are made of PTFE or other suitable materials. They may also have other than the above density values.

The soft material supports 2 are each bounded on the inside and outside by a radially encircling tooth 3, 4, 5, 6 with a rounded tooth tip 3a, 4a, 5a, 6a, which in the embodiment of FIG Each sealing arrangement produces metallic contact with the flange, as can be seen in FIG. The reference numerals 7 and 8 denote the flange leaves, and the reference numeral 9 in Fig. 2, a flange screw is provided.

In the installed state of the seal arrangement results in the embodiment of Fig. 2 in this way on both sides in each case a triple seal, namely metallic inside, metallic outside and between Softstoffabdichtung, as can be seen in Fig. 2.

A special feature of the embodiment of the seal assembly according to the invention shown in FIG. 2 is that the metallic base body 1 is embossed so that when viewed in cross section, the fabric 2 diagonally cuts in a straight line la and is guided so that it is in the installed state of the seal assembly with one end of the diagonal cut line la abuts on a flange 8 and with the other end of the diagonal cut line la on the other flange 7 of the flange, the diagonal cut line la thus forms the outer flank of one of the two inner teeth 4 and at the same time the inner flank of that outer tooth 5, which is located on the side opposite the latter inner tooth 4 side of the seal assembly.

In this way, for example, a comparison with the known from EP 1 062 442 B 1 seal assembly improved metallic seal against cross-sectional leakage is achieved. In addition, a better flow of the soft material 2 is achieved, in particular when the soft material 2 is graphite. This in turn results in an improved seal against interface leakage.

In addition, all embodiments of the seal assemblies according to the invention are ideal for use in large Flanschblattspalten of about 5 mm. This is ensured in a first embodiment of the sealing arrangements according to the invention in that all embodiments of the first embodiment of the sealing arrangement according to the invention are designed so that they have the following dimensioning combination in their original state before installation in the flange connection:

the sheet metal thickness of the metallic base body 1 is at least 0.5 mm, preferably at least 0.6 mm, more preferably at least 0.8 mm and even more preferably at least 1.0 mm,

the sheet metal thickness of the metallic base body 1 is at most 1.5 mm and preferably at most 1.2 mm,

the distance between the apexes 3a, 4a, 5a, 6a of each two adjacent annular teeth 3, 4, 5, 6 pointing in the same direction is greater than 3 mm and preferably greater than 4 mm,

the thickness of the metallic base body 1 over the vertices 3 a, 4 a, 5 a, 6 a of the ring teeth 3, 4, 5, 6 measured is at least 2 mm and preferably at least 3 mm,

the thickness of the metallic base body 1 over the vertices 3 a, 4 a, 5 a, 6 a of the ring teeth 3, 4, 5, 6 is at most 6 mm, preferably at most 5 mm and more preferably at most 4 mm,

the two-sided existing soft material pads 2 are each at least 1.5 mm, preferably at least 2.0 mm, and more preferably at least 3.0 mm thick each and

the two-sided existing soft material supports 2 are each not more than 3.5 mm thick.

The exemplary embodiments of inventive sealing arrangements shown in the figures are different exemplary embodiments of a further second embodiment of sealing assemblies according to the invention which is very closely related to the first embodiment, this second embodiment, strictly speaking, being only a special case of the first embodiment. It is in all embodiments of the second embodiment is in each case a seal assembly for flat flange, which has a consisting of a sheet metal annular base body 1 and both sides existing annular soft material layers 2, wherein in the metallic base body 1 ring four teeth or shafts 3, 4, 5, 6 each having substantially the same embossing depth are impressed such that each two of them point in the same direction, so seen in cross-section two of said four teeth or shafts 3, 5 upwards and two of said four teeth or shafts 4th 6, and there are no teeth or shafts equal to or higher than the four said teeth or shafts 3, 4, 5, 6 except for the four mentioned teeth or shafts 3, 4, 5, 6. The metallic base body 1 is, seen in cross-section within the region defined by the four teeth or shafts 3, 4, 5, 6, a line extending in the radial ring plane of the sealing arrangement (see the embodiment shown in FIG. 4) or an oblique one , the radial ring plane of the seal assembly intersecting straight line la (cf the embodiments shown in Figures 1 to 3) or a stepped embossed shape (see the embodiment shown in Figure 5) or a serrated or wave embossed shape or an embossed form of any other shape. All embodiments of inventive sealing arrangements shown in the figures have the following dimensioning combination in their original state before installation in the flange connection:

the sheet thickness of the metallic base body 1 is at most 1.5 mm and preferably at most 1.2 mm, the distance between the vertices 3a, 5a; 4a, 6a of the two pointing in the same direction of said four ring teeth 3, 5; 4, 6 is greater than 3 mm and preferably each greater than 4 mm, the thickness of the metallic base body 1 via the vertices 3a, 4a, 5a, 6a of said four ring teeth 3, 4, 5, 6 measured is at least 2 mm and preferably at least 3 mm,

the thickness of the metallic base body 1 via the vertices 3 a, 4 a, 5 a, 6 a of said four ring teeth 3, 4, 5, 6 is at most 6 mm, preferably at most 5 mm and more preferably at most 4 mm, the soft material supports 2 present on both sides are each at least 1.5 mm, preferably at least 2.0 mm and more preferably each at least 3.0 mm thick and

The essential difference between the first embodiment of the invention seal assemblies and the second embodiment of the invention seal assemblies is therefore that in the first embodiment, the distance between each two pointing in the same direction adjacent ring teeth 3, 4, 5, 6 each greater than 3 mm and preferably each is greater than 4 mm, while in the second embodiment of the invention seal assemblies only for the four highest ring teeth 3, 4, 5, 6 applies, between and / or outside of which then in the second embodiment, however, lower ring teeth with a smaller tooth spacing can be arranged. Further, in the first embodiment, the heights of the teeth or shafts provided in the seal assembly are far more freely selectable in their relative size relation to each other than in the second embodiment. In addition, at least four ring teeth or shafts 3, 4, 5, 6 are required in the second embodiment of inventive seal assemblies, while there must be only at least two ring teeth or shafts 3, 4, 5, 6 in the first embodiment of the invention seal assemblies. However, all sealing arrangements according to the invention can also have far more ring teeth or shafts in various embodiments. Ultimately, the total number of ring teeth or shafts is only limited by the specific total diameter of the individual seal arrangement. This can be, depending on the size of the flange to be sealed, from a few centimeters to a few meters. While the exemplary embodiment of Fig. 2 in the installed state has four annular metallic contacts between the seal assembly and the Flanschblättern 7, 8, however, there are also many other embodiments of inventive seal assemblies in which less or more or no metallic contacts between the seal assembly and the flange leaves 7, 8 occur.

For example, Fig. 3 shows an embodiment of a seal assembly according to the invention, which is very similar to the embodiment of Fig. 2, but in which all the tooth tips 3a, 4a, 5a, covered with soft material 2, so that no metallic Contact with the flange leaves 7, 8 results. Such an embodiment is particularly advantageous if the flange leaves 7, 8 are to be mechanically protected.

The exemplary embodiments of inventive sealing arrangements shown in the figures have a centering ring 10, which as such is already known to the person skilled in the art from other sealing arrangements of the prior art and, as usual, serves for centering the sealing arrangement when installed in the flange.

The centering ring 10 of the embodiments of the seal assembly according to the invention shown in the figures is provided with a predetermined breaking point 11. A very important point in the assembly of a seal assembly in a flat flange is namely that it is essential to tighten the flange 9 evenly and professionally. This is occasionally neglected by fitters. With loose flange bolts 9 due to improper tightening of the flange bolts 9, it can happen that the flanges are forced apart by high internal pressure of the medium flowing in the pipes. As a result, the centering ring 10, caused by the gap on both sides, is caused to oscillate by outflowing medium. These oscillations of the centering ring 10 excited by the outflowing medium are so strong that pieces of the centering ring 10 break out, fly out of the flange connection in a projectile manner and severely injure passing fitters or workers working near by. By providing the predetermined breaking point 11 in the centering ring 10, however, it is achieved that the centering ring 10, as soon as it begins to oscillate even slightly by any outflowing medium, completely breaks off. With the canceling of the centering ring 10 the vibrations are terminated immediately, and a threat to humans is then excluded in any case.

In the embodiments of the sealing arrangement according to the invention shown in the figures, the soft material supports 2 are not completely pressed into the embossing depths of the teeth 3, 4, 5, 6 before the installation of the seal arrangement in the flange (see FIG. Only after the installation of the seal assembly in the flange takes place with the tightening of the flange screws 9 in the embodiments of the seal assembly according to the invention shown in the figures, the pressing of the soft material 2 in the embossing depths of the teeth 3, 4, 5, 6.

In other, particularly preferred embodiments of the sealing arrangement according to the invention, the soft material 2 is already in the original state of the sealing arrangement, i. before being installed in a flange, pressed into the embossing depths of soft material 2 to be filled with teeth 3, 4, 5, 6, so that in those embodiments, even before installation in the flange for the corresponding seal assemblies according to the invention results in a geometry as described in Fig. 2 or in Fig. 3 is shown.

In any case, it is particularly preferred to choose the thickness and the density of the soft material supports 2 such that the soft material supports 2 are optimally compressed in the installed state of the sealing arrangement according to the invention.

It is also particularly preferred to make the teeth 3, 4, 5, 6 so that they have a spring characteristic.

Claims

claims

1. Sealing arrangement for flat flange with a consisting of a sheet metal annular metallic body (1) and on both sides existing annular soft material supports (2), wherein in the metallic base body (1) annular teeth or shafts (3, 4, 5, 6) are impressed and the seal assembly is marked in its original condition prior to installation in the flange joint by the following dimension combination:

the sheet metal thickness of the metallic base body (1) is at least 0.5 mm, preferably at least 0.6 mm, more preferably at least 0.8 mm and even more preferably at least 1.0 mm,

the sheet metal thickness of the metallic base body (1) is at most 1.5 mm and preferably at most 1.2 mm,

the distance between the vertex points (3a, 4a, 5a, 6a) of each of two adjacent ring teeth (3, 4, 5, 6) pointing in the same direction is greater than 3 mm and preferably greater than 4 mm,

the thickness of the metallic base body (1) over the vertices (3 a, 4 a, 5 a, 6 a) of the ring teeth (3, 4, 5, 6) is at least 2 mm and preferably at least 3 mm,

the thickness of the metallic base body (1) over the vertices (3a, 4a, 5a, 6a) of the ring teeth (3, 4, 5, 6) is at most 6 mm, preferably at most 5 mm and more preferably at most 4 mm,

the two-sided existing soft material supports (2) are each at least 1.5 mm, preferably in each case at least 2.0 mm and more preferably in each case at least 3.0 mm thick and

the two-sided existing soft material supports (2) are each at most 3.5 mm thick.

2. Sealing arrangement for flat flange with a consisting of a sheet metal annular base body (1) and on both sides existing annular soft material supports (2), wherein in the metallic base body (1) annularly four teeth or waves (3, 4, 5, 6) each substantially the same embossing depth are embossed such that each two of them facing in the same direction, so that seen in cross-section two of said four teeth or shafts (3, 5) facing upward and two of said four teeth or shafts (4, 6) facing down, and except the four said teeth or shafts (3, 4, 5, 6) there are no teeth or shafts equal to or higher than the four said teeth or shafts (3, 4, 5, 6),

characterized in that

the metallic base body (1) within the area defined by the four teeth or shafts (3, 4, 5, 6) seen in cross-section a line running in the radial ring plane of the seal assembly or an oblique straight line intersecting the radial ring plane of the seal assembly Line (la) is or has a stepped embossed shape or a serrated or wavy embossed shape or an embossed shape of any other shape and

the seal assembly is marked in its original condition prior to installation in the flange connection by the following dimensioning combination:

the distance between the apexes (3a, 5a, 4a, 6a) of the two facing in the same direction of said four annular teeth (3, 5, 4, 6) is greater than 3 mm, and preferably each greater than 4 mm, the thickness the metallic base body (1) is measured over the vertices (3a, 4a, 5a, 6a) of said four ring teeth (3, 4, 5, 6) is at least 2 mm and preferably at least 3 mm,

the thickness of the metallic base body (1) over the vertices (3a, 4a, 5a, 6a) of said four annular teeth (3, 4, 5, 6) is at most 6 mm, preferably at most 5 mm and more preferably at most 4 mm , the two-sided existing soft material supports (2) are each at least 1.5 mm, preferably in each case at least 2.0 mm and more preferably in each case at least 3.0 mm thick and

the two-sided existing soft material pads (2) are each at most 3.5mm thick.

3. Sealing arrangement according to claim 2, characterized in that the soft material supports (2) are located at least within the region defined by the four teeth or shafts (3, 4, 5, 6) and each individual vertex (3a, 4a, 5a, 6a) of the four said teeth or shafts (3, 4, 5, 6) irrespective of the state of the respective other vertices (3a, 4a, 5a, 6a)

covered with soft cloth overlay (2) or free of soft cloth overlay (2) and rounded or not rounded

is.

4. Sealing arrangement according to one of the preceding claims, characterized in that the metallic base body is embossed so that in the region of the soft material supports (2) seen in cross section, the shape of two with a common leg (la) reversed on each other and taken in each case nichtgleichschenkliger Angle or a non-even-toothed sawtooth curve with correspondingly different steep flanks, each one of the metallic base body (1) formed apex (3a, 4a, 5a, 6a) or each of the metallic base body (1) formed tooth tip (3a, 4a, 5a, 6a) regardless of the corresponding state of the other of the metallic base body (1) formed apex (3a, 4a, 5a, 6a) or tooth tips (3a, 4a, 5a, 6a)

is.

5. Sealing arrangement according to claim 4, characterized in that from the common leg (la) different legs of the two non-even-angle each separately at an angle of 45 ° to 90 °, preferably from 55 ° to 65 ° or 60 ° or 60th ° to 90 °, more preferably from 75 ° to 90 °, more preferably from 80 ° to 90 ° and even more preferably from 85 ° to 90 ° or from 90 ° to the radial ring plane of the seal assembly form, so that the metallic base body (1 ) in the region of the soft material supports (2) has exactly or at least approximately the shape of an overturned "Z".

6. Sealing arrangement according to claim 4 or claim 5, characterized in that the of the common leg (la) different legs of the two non-even-angle are shorter than the common leg (la).

7. Sealing arrangement according to one of claims 4 to 6, characterized in that the of the common legs (la) different legs of the two non-equal-angle are substantially equal in length.

8. Sealing arrangement according to one of claims 4 to 7, characterized in that the two-sided existing soft material supports (2) inside and outside each bounded by a radially encircling, in the metallic base body (1) tooth (3, 4, 5, 6) be made in the installed state of the seal assembly each metallic contact with the flange, so that in the installed state of the seal assembly on both sides in each case a triple seal results, namely metallic inside, metallic outside and in between Softstoffabdichtung, and

the metallic base body (1) is embossed in such a way that, seen in cross-section, it cuts diagonally through the soft material (2) in a straight line (la) and is guided in such a way that, with one end of the diagonal cut line (la), the seal assembly is installed. on a flange (8) and abuts the other end of the diagonal line (la) on the other flange (7) of the flange, the diagonal line (la) so the outer edge of one of the two inner teeth (4) and simultaneously the inner Flank of that outer tooth (5) forms, which is located on the latter of the latter inner tooth (4) opposite side of the seal assembly.

9. Sealing arrangement according to one of the preceding claims, characterized in that the teeth (3, 4, 5, 6) have a spring characteristic.

10. Sealing arrangement according to one of the preceding claims, characterized in that the thickness and the density of the soft material supports (2) are selected so that the soft material supports (2) are optimally compressed in the installed state of the seal assembly.

11. Sealing arrangement according to one of the preceding claims, characterized in that the soft material (2) is already pressed before installation of the seal assembly in a flange in the embossing depths of the soft material to be filled with teeth or waves (4, 5).

12. Sealing arrangement according to one of the preceding claims, characterized by a centering ring (10).

13. Sealing arrangement according to claim 12, characterized in that the centering ring (10) has a predetermined breaking point (11).

14. Sealing arrangement according to one of the preceding claims, characterized in that the Weichstoffaufiagen (2) made of graphite or PTFE.

15. Sealing arrangement according to claim 14, characterized in that the Weichstoffaufiagen (2) consist of graphite and in the original state prior to installation of the seal assembly in the flange a density of at least

0.7 g / cm and at most 1.5 g / cm.