JPH01299393A - Spherical zone seal body and production thereof - Google Patents

Abstract

PURPOSE:To prevent the generation of noise resulting from vibration and the generation of the confined sound in a car room by constituting a fireproof material consisting of a wire gauze obtained by weaving or braiding a metal fine wine or expansion graphite. CONSTITUTION:A spherical zone seal body 80 is provided a vibration absorbing part 83 made of a wire gauze formed with a prescribed width from an internal circular hole 81 side to an external protruding spherical face part 82 side, a wire gauze covering this vibration absorbing part 83 integrally with this absorbing part 83 and formed on a protruding spherical face part 82 and the end face of the major diameter side of this protruding spherical face part 82 and a sealing part 84 consisting of a fireproof material filling the mesh or the gap of this wire gauze. In this internal hole side of the spherical zone seal body 80 fitted into the peripheral face of the pipe end part of an exhaust pipe of an upstream side, so that the vibration absorbing part 83 consisting of the wire gauze is formed, the vibration of the exhaust pipe caused from a car engine is absorbed by the elastic operation of the internal face vibration absorbing part 83 and the generation of noise due to the vibration of the exhaust pipe and the generation of the confined sound in a car room are prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a ball-and-strip seal used in an automobile exhaust pipe joint and a method for manufacturing the same.

[Conventional technology]

Exhaust gas from a car engine is led from the engine to an exhaust pipe placed on the car body frame and discharged into the atmosphere, but this exhaust pipe is repeatedly subjected to bending stress due to the engine's torque reaction force and inertial force. In particular, in the case of a front wheel drive horizontal engine, this bending stress is considerably greater than in the case of a longitudinally installed engine.

Therefore, engine vibrations may be transmitted through the exhaust pipe hanging bracket and brought into the passenger compartment (muffled noise in the passenger compartment), or cause not only noise, but also the risk of problems such as exhaust pipe fatigue and breakage. There is also.

In order to solve these problems, conventional measures have been taken, such as arranging spherical pipe joints at predetermined locations on the exhaust pipe to absorb stress.

Here, an example of a conventionally known spherical pipe joint of this type will be described below based on FIG. 1 of the accompanying drawings.

In the figure, an upstream exhaust pipe (engine side) 1 and a downstream exhaust pipe (atmosphere side) 2 are arranged on the same axis so as to face each other with a slight gap S left at the pipe ends. .

On the outer peripheral surface of the pipe end of the upstream exhaust pipe 1, a spherical band-shaped seal body 5 having a circular hole 3 on the inner surface and a partially convex spherical surface portion 4 on the outer surface fits into the circular hole 3, and the convex spherical surface The large-diameter end surface 6 of the portion 40 is disposed in contact with a flange 7 fixed to the outer circumferential surface of the upstream exhaust pipe 1.

On the other hand, a concave spherical surface portion 8 corresponding to the partially convex spherical surface portion 4 of the spherical band-shaped seal body 5 is formed at the pipe end of the downstream exhaust pipe 2 . Partially convex spherical surface part 4
It is slidably engaged with.

On the core, the downstream exhaust pipe 1.2 has one end connected to the upstream exhaust pipe l.
The other end is screwed and fixed to the flange 7 of the downstream exhaust pipe 2.
A pair of headed bolts 10.10 are inserted through a flange 9 fixed near the concave spherical portion 8 of the bolt 10.
A pair of coil springs 11. are disposed between the head of the flange 9 and the flange 9, and are always biased in the direction of the upstream exhaust pipe 1.
11.

In this way, by the action of this coil spring 11, the convex spherical surface part 4 of the spherical band-shaped seal body 5 and the concave spherical surface part 8 of the pipe end of the downstream exhaust pipe 2 come into contact with each other to enable relative movement under pressure. It is configured as follows.

By the way, the spherical band-shaped seal body 5 used in the exhaust pipe joint having the above-mentioned structure has a structure that allows smooth relative angular movement between the core and the downstream exhaust pipes 1 and 2 that occurs with the rotation of the automobile engine. ■A sealing function that prevents exhaust gas from leaking from the joint, ■A vibration absorption function that absorbs minute vibrations in the exhaust pipe that occur as the automobile engine rotates.
etc. are required.

As disclosed in Japanese Patent Publication No. 58-21144, this spherical sealing body has conventionally been made of a wire mesh and a flexible fireproof plate material (expanded graphite sheet, mica sheet, etc.). A preform is formed by stacking them on top of each other and winding them into a cylindrical shape, and then compressing the preform in the axial direction of the mold.

[The unquestioned point that the invention attempts to solve]

The above-described conventional seal body made of a wire mesh and a refractory material is such that the refractory material is filled in all the holes and gaps of the wire mesh, and the two are intertwined with each other to provide structural integrity; Since the refractory material exposed on the convex spherical surface of the seal body is flexible and has excellent conformability to the mating surface, the sealing function against leakage of exhaust gas at the spherical joint is enhanced. Since the seal body itself acts as a rigid body against the minute vibrations that occur in the exhaust pipe, it can hardly be expected to absorb the vibrations.Therefore, it is difficult to prevent the generation of noise caused by the vibrations and the muffled sound in the passenger compartment. remains as an issue.

The present invention has been made in view of the above-mentioned problems, and the present inventors have focused on the fact that a compression molded product made of a single wire mesh is highly elastic and has vibration absorbing ability. The present invention was made by confirming through experiments that the sealing function of the seal body is sufficiently fulfilled in a specific portion of the seal body.

That is, it is an object of the present invention to provide a ball-and-strip shaped seal body used particularly in exhaust pipe joints of automobiles, which solves the above-mentioned problems with the seal body, and a method for manufacturing the same.

[Means for solving problems]

The present invention employs the following technical means, that is, the configuration, to achieve the above-mentioned object.

The first configuration is a spherical band-shaped seal body that has a circular hole in the center and a partially convex spherical surface part on the outer surface, and is used particularly for exhaust pipe joints of automobiles, and the spherical band-shaped seal body has a thin metal wire. The seal body is made of a wire mesh obtained by weaving or knitting and a fireproof material made of expanded graphite. a convex spherical surface portion integrally covering the vibration absorbing portion and a wire mesh formed on the large diameter side end surface of the convex spherical surface portion; and a refractory material filling the holes and gaps of the wire mesh. The second structure has a circular hole in the center and a partially convex spherical part on the outer surface, and is particularly suitable for automobile exhaust pipe joints. The spherical band-shaped sealing body used is made of a wire mesh obtained by weaving or knitting thin metal wires, a fireproof material made of expanded graphite, and a sliding material, and the sealing body has a center portion. A vibration absorbing part made of a wire mesh formed with a predetermined width from the circular hole side to the convex spherical part side; A sealing portion made of the wire mesh formed on the radial end face and a refractory material filling the openings and gaps of the wire mesh, and a sliding surface portion formed integrally with the sealing portion on the surface of the convex spherical portion. It is a spherical and band-shaped seal body characterized by:

The method for manufacturing the spherical band-shaped seal body having the above-mentioned first configuration is as follows: (1) Prepare a long wire mesh obtained by weaving or knitting thin metal wires, and attach the wire mesh at least twice to the outer circumferential surface of the core.
After winding the wire mesh to form a partial cylindrical portion, a fireproof board made of an expanded graphite sheet having a width wider than the width of the wire mesh is superimposed on the remaining wire mesh portion, and both are connected to the partial cylindrical portion. (1) inserting the preform into the mandrel of a mold and inserting the preform into the mold; The method for manufacturing a spherical band-shaped seal body comprising the step of compressing the molded body in the axial direction of the molded body and having the second configuration is as follows: ■ Prepare a long wire mesh obtained by weaving or knitting thin metal wires. After winding the wire mesh at least twice around the outer circumferential surface of the core to form a partial cylindrical portion on the wire mesh, a fireproof plate material made of an expanded graphite sheet having a width wider than the width of the wire mesh is attached to the remaining wire mesh portion. A step of overlapping them and continuously winding them around the partial cylindrical portion to form a cylindrical body with the refractory plate protruding from one end; (2) A process of winding a plate-shaped sliding material of a width to form a preformed body; The process consists of a step of compressing in the axial direction of the

Another method for manufacturing the spherical band-shaped seal body having the above-mentioned second configuration is as follows: (1) Prepare a long wire mesh obtained by weaving or knitting thin metal wires, and wind the wire mesh around the outer peripheral surface of the core at least twice. (1) preparing an expanded graphite sheet wider than the width of the wire mesh as a fireproof plate material, and applying a sliding plate on the surface of one end of the expanded graphite sheet to the same width as the wire mesh; (1) overlaying the fireproof plate material on the remaining wire mesh portion of the wire mesh on which the partial cylindrical portion is formed, making both of them continuous with the partial cylindrical portion, and sliding them to the outermost periphery; a process of forming a preformed body with the refractory plate material protruding from one end by winding the material so that the material is positioned; and compressing the preform in the axial direction of the molded body.

In the spherical seal body having the above-described first and second configurations and the manufacturing method thereof, the wire mesh may be stainless steel wire or iron wire such as 1-stenite 5US304.5O8316, ferritic 5O5430, or galvanized iron wire. A woven or braided wire mesh obtained by weaving or knitting thin metal wires such as (JIS-G-3532) is used.

The woven or braided wire mesh used has a mesh size of 3 to 5 IIIll.

Expanded graphite as a refractory material is manufactured by the Union Carbide Company in the United States and is disclosed in Japanese Patent Publication No. 44-23966.
Graph Oil (trade name)' or Nika Film (trade name) manufactured by Nippon Carbon Co., Ltd. are used, and as mica, mica paper (sheet) bonded with silicone is used.

Tetrafluoroethylene resin is used as the sliding material in the spherical seal having the second configuration described above.

The sliding material in the method for manufacturing a spherical seal having the second configuration is as follows: (1) After superimposing a polytetrafluoroethylene resin film or tape on an expanded graphite sheet, the film or tape is applied with a roller and crimped. One in which a tetrafluoroethylene resin layer is formed on one side of the expanded graphite sheet; ■ An expanded graphite sheet is placed on a wire mesh, and a tetrafluoroethylene resin film or tape is placed on top of the expanded graphite sheet. Thereafter, these are rolled and pressed together to form a polytetrafluoroethylene resin layer on the surface, and then used.

The tetrafluoroethylene resin film or tape forming the sliding material is a raw film or tape having a thickness of about 0.05 to 0.5 nm+m.

For example, polytetrafluoroethylene resin raw films and raw tapes manufactured by paste extrusion molding method using tetrafluoroethylene resin fine powder (Teflon 6J, Polyflon FIOI, Fluon CDI: all trade names) are suitable. It is mentioned as.

[Action/Effect]

The spherical seal having the above-described structure is incorporated into the exhaust pipe joint shown in FIG. 1.

That is, the inner circular hole of the spherical band-shaped seal body is fitted into the outer peripheral surface of the pipe end of the upstream exhaust pipe, and the large diameter end surface of the convex spherical part is brought into contact with the flange fixed to the upstream exhaust pipe. the outer circumferential surface of the upstream exhaust pipe, and the convex spherical outer surface of the spherical band-shaped seal member is slidably engaged with the inner surface of the concave spherical surface formed at the end of the downstream exhaust pipe. .

At this time, since a vibration absorbing section made of a wire mesh is formed on the inner hole side of the spherical band-shaped seal body fitted to the outer circumferential surface of the pipe end of the upstream exhaust pipe, the exhaust pipe coming from the automobile engine The vibrations are absorbed by the elastic action of the internal vibration absorbing portion of the spherical seal, and the generation of noise and muffled sound in the vehicle cabin due to the vibration of the exhaust pipe is prevented.

The vibration absorbing portion made of a wire mesh must be formed with a certain width from the circular hole side where the spherical band-shaped seal body is fitted to the outer peripheral surface of the exhaust pipe to the outer convex spherical portion side,
At the time of manufacturing the spherical band-shaped seal body, at least 2
It was confirmed that the desired elastic action could be exerted by winding the material around the circumference.

Further, a sealing portion made of a wire mesh and a refractory material filling the openings and gaps of the wire mesh is formed on the outer convex spherical surface portion of the spherical band-shaped seal body and the large diameter side end surface of the convex spherical surface portion. In order to seal between the flange fixed to the upstream exhaust pipe and the inner surface of the concave spherical surface formed at the end of the downstream exhaust pipe, exhaust gas from the exhaust pipe joint is sealed. Leakage is prevented.

The sealing function of the sealing portion of the above-mentioned spherical seal member was confirmed by the following test.

<Test Conditions> The spherical and band-shaped seal body having the above-mentioned configuration was incorporated into the exhaust pipe joint shown in FIG. 1, and brought into sliding contact under the following conditions.

Pressing force 40kg Swing angle ±3" Vibration frequency 10 hertz Atmospheric temperature Room temperature - 500℃ Inner pipe pressure 0.3kg/cm" Test method: 10
After performing 45,000 rocking motions of ±3° at the Hertzian frequency at room temperature, the atmospheric temperature was raised to 500°C without continuing the motion, and the number of rocking motions during heating was 45. ，
000 times), when the ambient temperature reached 500°C, the rocking movement was performed 115,000 times, and then, without continuing the movement, the ambient temperature was lowered to room temperature (the number of rocking movements during cooling was 45,000 times). A total of 250,000 oscillations (1 cycle) is performed for 8 cycles.

The above test results are shown in the table below.

(Left below) In the table, the spherical band-shaped seal body A of the present invention is a spherical band-shaped seal body equipped with a vibration absorbing part and a sealing part, and the spherical band-shaped seal body B of the present invention is a spherical belt-shaped seal body having a vibration absorbing part, a sealing part, and a sliding surface part. It is a band-shaped seal body.

From the above test results, it was confirmed that the spherical and band-shaped sealing body of the present invention has a sealing function almost equivalent to that of the conventional spherical and band-shaped sealing body (Japanese Patent Publication No. 58-21144).

In addition to the above-mentioned effects, the spherical band-shaped seal body of the present invention, which has a convex spherical surface portion and a sliding surface portion made of a sliding material, suppresses the relative angular movement that occurs in the upper and downstream exhaust pipes through the seal body. This has the effect of making the operation smoother, and this effect prevents the generation of friction noise due to sliding between the convex spherical surface of the seal body and the concave spherical surface of the upstream exhaust pipe.

This was confirmed from the measurement results of the swing torque (kg-cm) tested under the same test conditions as described above. The measurement results are shown in the table above. Note that the swing torque is the average value of the values measured at the end of each cycle.

〔Example〕

An embodiment of the spherical-band-shaped sealing body of the present invention having the above-mentioned configuration will be described in detail based on FIGS. 2 to 15 of the accompanying drawings showing the manufacturing process thereof.

<Example: I> (First step) Using 5US403 with a wire diameter of 0.28 mm as the thin metal wire, a braided wire mesh 20 with a stitch of 3Il1m and a width of 50II11 was created. This braided wire mesh 20 was wound twice around the outer peripheral surface of the core 30 to form a partial cylindrical portion 21 in the wire Y420 (FIG. 2).

(Second step) As the refractory material 40, an expanded graphite sheet with a thickness of 0.5 mm and a width of 6 pans (manufactured by Nippon Carbon Co., Ltd. "Nika Film (trade name)"
” is prepared, and the expanded graphite sheet is superimposed on the remaining wire mesh portion of the wire mesh 20 in which the partial cylindrical portion 21 is formed (
(Fig. 3), both were connected to the partial cylindrical portion 21 and wound into a cylindrical shape to form a preformed body 50 with the refractory material 40 protruding from one end (Fig. 4).

(Third step) The preformed body 50 is fitted onto the outer peripheral surface of the mandrel 72 of the mold 70, which has a partially concave spherical band portion 71 on the inner surface, and is positioned in the mold 70 (FIG. 5). The preformed body 50 was compressed in the axial direction of the molded body 50 to obtain a spherical band-shaped sealing body 80 having a circular hole 81 on the inner surface and a partially convex spherical surface portion 82 on the outer surface (FIG. 6).

The thus obtained spherical band-shaped seal body 80 is integrally formed with a vibration absorbing portion 83 made of gold m20 and formed with a predetermined width from the inner circular hole 81 side to the outer convex spherical surface portion 82 side. A seal consisting of the wire mesh 20 covering the vibration absorbing portion 83 and formed on the convex spherical surface portion 82 and the large diameter end surface of the convex spherical surface portion 82, and the refractory material 40 filling the holes and gaps of the gold w420. 84.

<Example: ■> (First step) As in Example I, 5US403 with a wire diameter of 0.281 was used as the thin metal wire, the stitches were 3IIIll, and the width was 5mm.
A braided wire mesh 20 was created. This braided gold m20 core 3
The partial cylindrical part 21 is wound around the outer peripheral surface of the wire mesh 20 twice.
was formed (Figure 2).

(Second step) As in Example I, the refractory material 40 has a thickness of 0°51
1II11. Prepare an expanded graphite sheet ("Nika Film (trade name)" manufactured by Nippon Carbon Co., Ltd.) with a width of 60 mm, and overlap the expanded graphite sheet with the remaining wire mesh portion of the gold 120 in which the partial cylindrical portion 21 is formed. (FIG. 3) and a first preformed body 50 which is connected to the partial cylindrical part 21 and wound into a cylindrical shape, with the refractory material 40 protruding from one end.
was formed (Fig. 4).

(Third step) An expanded graphite sheet 91 having the same width as the wire mesh 20 is separately prepared, and a polytetrafluoroethylene raw tape 92 having a thickness of 0.1+am is superimposed on the sheet 91 (seventh step). figure)
At the same time, these are passed between rollers R and R, and a raw tetrafluoroethylene resin tape 92 is pressed and integrated on one surface of the expanded graphite sheet 91 to form a tetrafluoroethylene resin layer, and this is used as a sliding material. 90 (Figure 8).

(Fourth step) The sliding material 90 is wound around the outer peripheral surface of the first preformed body 50 obtained in the second step with the tetrafluoroethylene resin layer outside, and the second preformed body 51 is formed. Created (Figure 9)
.

(Fifth step) The second preform 51 is fitted onto the outer peripheral surface of the mandrel 72 of the mold 70, which has a partially concave spherical band portion 71 on the inner surface.
(FIG. 10) and compresses the second preform 51 in the axial direction of the molded body 51 to form a spherical belt-shaped body having a circular hole 81 on the inner surface and a partially convex spherical surface portion 82 on the outer surface. A seal body 80 was obtained (FIG. 11).

The thus obtained spherical band-shaped seal body 80 is integrally formed with a vibration absorbing portion 83 made of a wire mesh 20 formed with a predetermined width from the inner circular hole 81 side to the outer convex spherical surface portion 82 side. A seal consisting of the wire mesh 20 that covers the vibration absorbing portion 83 and is formed on the convex spherical surface portion 82 and the large-diameter end surface of the convex spherical surface portion 82, and a refractory material 40 that fills the holes and gaps of the wire mesh 20. 84 and a sliding surface portion 85 in which a polytetrafluoroethylene resin layer of a sliding material 90 is formed on the surface of the convex spherical portion of the sealing portion 84.

<Example: ■> This example is another method for manufacturing the spherical band-shaped seal body of the above-mentioned Example (■).

(First step) As in Example ① above, the wire diameter is 0.281I as the thin metal wire
Using Il 5US403, stitch 3au++s width 5
A pigeon association net 20 of 0 mm was created. This braided gold ￥tM2
0 was wound twice around the outer peripheral surface of the core 30 to form a partial cylindrical portion 21 on the wire mesh 20 (FIG. 2).

(Second Step) An expanded graphite sheet with a thickness of 0.5 ml and a width of 60 am is prepared as the refractory material 40, and the gold! is applied to the surface of one end of the expanded graphite sheet. A raw polytetrafluoroethylene resin tape 92 is overlapped to a width equivalent to the width of 20 (50a+m), and both are passed between rollers R and R to be crimped and integrated, and one end of the expanded graphite sheet is A tetrafluoroethylene resin layer was formed on the surface (FIGS. 12 and 13).

(Third step) A refractory material 40 having a polytetrafluoroethylene resin layer on the surface of one end of the expanded graphite sheet is superimposed on the remaining wire mesh portion of the wire mesh 20 on which the partial cylindrical portion 21 is formed, and both is continuous with the partial cylindrical part 21, and is wound into a cylindrical shape so that only the refractory material 40 having a polytetrafluoroethylene resin layer is located on the outermost periphery, and the refractory material 40 protrudes from one end. A molded body 50 was formed (FIG. 14).

(Fourth step) The preformed body 50 is inserted into the outer circumferential surface of the mandrel 72 of the mold 70, which has a partially concave spherical band portion 71 on the inner surface, and is positioned inside the mold 70 (FIG. 15). The preformed body 50 was compressed in the axial direction of the molded body 50 to obtain a spherical band-shaped sealing body 80 having a circular hole 81 on the inner surface and a partially convex spherical surface portion 82 on the outer surface (FIG. 11).

The thus obtained spherical band-shaped seal body 80 has a vibration absorbing portion 83 made of gold 1II20 formed with a predetermined width from the inner circular hole 81 side to the outer convex spherical surface portion 82 side, and the vibration absorbing portion 83 is integrated with the vibration absorbing portion 83. The convex spherical surface portion 82 covers the vibration absorbing portion 83, and the refractory material 40 fills the holes and gaps of the wire mesh 20. It includes a sealing part 84 and a sliding surface part 85 in which a polytetrafluoroethylene resin layer of a sliding material 90 is formed on the surface of the convex spherical part of the sealing part 84.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view showing an automobile exhaust pipe joint, Fig. 2 is a plan view showing a wire mesh with a partially cylindrical portion, and Fig. 3 is a fireproofing of the remaining wire mesh portion of the wire mesh with the partially cylindrical portion. FIG. 4 is a plan view showing the preformed body, FIG. 5 is a vertical cross-sectional view showing the compression molding process, and FIG. 6 is a vertical cross-sectional view showing the spherical seal body. Figures 7 and 8 are longitudinal cross-sectional views showing the sliding material, Figure 9 is a plan view showing the preform, Figure 10 is a vertical cross-sectional view showing the compression molding process, and Figure 11 is a spherical seal member. Longitudinal sectional views shown in FIGS. 12 to 13
14 is a plan view showing the preformed body, and FIG. 15 is a longitudinal sectional view showing the compression molding process. 20: Wire mesh 21: Partial cylindrical part 40: Fireproof material 50:
Preformed body 70: Mold 80: Spherical seal body 81: Inner hole 82: Convex spherical surface part 83: Vibration absorbing part 84: Sealing part 85
:Sliding surface part

Claims (9)

[Claims] (1) A spherical band-shaped seal body having a circular hole in the center and a partially convex spherical part on the outer surface, which is used especially for automobile exhaust pipe joints, and the spherical band-shaped seal body is made of woven or knitted metal wires. The seal body includes a vibration absorbing part made of a wire mesh formed with a predetermined width from the circular hole side in the center to the convex spherical surface side, and A seal consisting of the wire mesh formed on the convex spherical surface portion and the large-diameter end surface of the convex spherical surface portion so as to integrally cover the vibration absorption portion, and a refractory material filling the holes and gaps of the wire mesh. A spherical band-shaped seal body comprising: (2) A spherical band-shaped seal body having a circular hole in the center and a partially convex spherical surface on the outer surface, and used particularly for automobile exhaust pipe joints, the spherical band-shaped seal body being made of woven or knitted metal wires. The seal body is a vibration absorbing material made of a wire mesh formed with a predetermined width from the central circular hole side to the convex spherical surface side. a wire mesh integrally covering the vibration absorbing portion and formed on the convex spherical surface portion and the large diameter end surface of the convex spherical surface portion; and a refractory material filling the holes and gaps of the wire mesh. What is claimed is: 1. A spherical band-shaped seal body comprising: a sealing part made of a sealing part; and a sliding surface part made of a sliding material formed integrally with the sealing part on a surface of the convex spherical part. (3) The spherical band-shaped seal body according to claim 2, wherein the sliding material is made of tetrafluoroethylene resin. (4) [1] After preparing a long wire mesh obtained by weaving or knitting thin metal wires and winding the wire mesh around the outer peripheral surface of the core at least twice to form a partial cylindrical part on the wire mesh, A fireproof plate material made of an expanded graphite sheet having a width wider than the width of the wire mesh is superimposed on the remaining wire mesh portion of the wire mesh, and both are continuously wound around the partial cylindrical portion, with the fireproof plate material protruding from one end. a step of forming a preform; [2] a step of fitting the preform onto a mandrel of a mold and inserting it into the mold, and compressing the preform in the axial direction of the mold; a vibration absorbing part made of a wire mesh formed with a predetermined width from the circular hole side in the center to the convex spherical surface part; A method for manufacturing a spherical band-shaped seal body, comprising a sealing portion made of the wire mesh formed on the large-diameter end surface of the convex spherical surface portion and a refractory material filling the holes and gaps of the wire mesh. (5) [1] Prepare a long wire mesh obtained by weaving or knitting thin metal wires, wrap the wire mesh around the outer peripheral surface of the core at least twice to form a partial cylindrical part on the wire mesh, and then A fireproof plate material made of an expanded graphite sheet having a width wider than the width of the wire mesh is superimposed on the remaining wire mesh portion of the wire mesh, and both are continuously wound around the partial cylindrical portion, with the fireproof plate material protruding from one end. a step of forming a cylindrical body; [2] a step of winding a plate-like sliding material having the same width as the wire mesh around the outer peripheral surface of the cylindrical body to form a preformed body; [3] the preformed body The preform is compressed in the axial direction of the molded body by fitting it onto the mandrel of the mold and inserting it into the mold, from the circular hole side in the center to the convex spherical side. A vibration absorbing part made of a wire mesh formed with a predetermined width; and a wire mesh formed on the convex spherical surface part and the large diameter end surface of the convex spherical surface part integrally covering the vibration absorbing part. Manufacturing a spherical band-shaped seal body comprising a sealing part made of a refractory material filling the meshes and gaps of the wire mesh, and a sliding surface part made of a sliding material formed integrally with the sealing part on the surface of the convex spherical part. Method. (6) The sliding material is made by superimposing a polytetrafluoroethylene resin film or tape on an expanded graphite sheet, and then pressing it together with a roller to form a polytetrafluoroethylene resin layer on one side of the expanded graphite sheet. 6. The method of manufacturing a spherical-band-shaped seal body according to claim 5, wherein: . (7) The sliding material is made by superimposing an expanded graphite sheet on a wire mesh and a polytetrafluoroethylene resin film or tape on top of the expanded graphite sheet, and then pressing the three together with a roller and applying four layers to the surface. 6. The method of manufacturing a spherical seal member according to claim 5, wherein a fluorinated ethylene resin layer is formed. (8) [1] A step of preparing a long wire mesh obtained by weaving or knitting fine metal wires, and winding the wire mesh around the outer peripheral surface of the core at least twice to form a partial cylindrical portion on the wire mesh. [2] Prepare an expanded graphite sheet wider than the width of the wire mesh as a fireproof plate material, and integrally form a sliding material having the same width as the wire mesh over a predetermined length on one end surface of the expanded graphite sheet. [3] Overlapping the fireproof plate material on the remaining wire mesh portion of the wire mesh in which the partial cylindrical portion is formed, making both of them continuous with the partial cylindrical portion, and winding so that the sliding material is located at the outermost periphery. [4] Fitting the preform onto a mandrel of a mold and inserting it into the mold; compressing the molded body in the axial direction of the molded body, and integrally with the vibration absorbing part and a vibration absorbing part made of a wire mesh formed with a predetermined width from the circular hole side of the central part to the convex spherical part side. A sealing part that covers the vibration absorbing part and is formed of the convex spherical surface part and the large-diameter end surface of the convex spherical part and is made of a refractory material that fills the holes and gaps of the wire mesh, and is integral with the sealing part. and a sliding surface portion made of a sliding material formed on the surface of the convex spherical surface portion. (9) The method for manufacturing a spherical and band-shaped seal body according to claim 8, wherein the sliding material is made of a polytetrafluoroethylene resin film or tape.