CN201884643U - Tetrafluoro-rubber gasket - Google Patents
Tetrafluoro-rubber gasket Download PDFInfo
- Publication number
- CN201884643U CN201884643U CN2010205912947U CN201020591294U CN201884643U CN 201884643 U CN201884643 U CN 201884643U CN 2010205912947 U CN2010205912947 U CN 2010205912947U CN 201020591294 U CN201020591294 U CN 201020591294U CN 201884643 U CN201884643 U CN 201884643U
- Authority
- CN
- China
- Prior art keywords
- tetrafluoro
- gasket
- rubber
- rubber gasket
- seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a tetrafluoro-rubber gasket, which relates to a seal gasket. The tetrafluoro-rubber gasket comprises an annular rubber matrix and a polytetrafluoroethylene covering layer, wherein the thickness of the polytetrafluoroethylene covering layer is 0.5-1.5mm. The tetrafluoro-rubber gasket has high plasticity, therefore, the tetrafluoro-rubber gasket can perform the effective seal action under the working conditions of low temperature and low pressure only by the smallest fastening force, and moreover, the gasket cannot split when being dismounted from a flange and takes a good seal effect on a flange face; simultaneously, due to the fact that the gasket has high dilatancy and permeability resistance, an extremely effective seal is formed for resisting gas engine fluid to pass.
Description
Technical field
The utility model relates to a kind of gasket seal, a kind of specifically tetrafluoro rubber sheet gasket with corrosion resistance.
Background technique
At present, in the pipeline valve field of sealing technology, the general pad of making by single rubber material that adopts in flange seal surface, rubber has quite excellent compressibility and rebound elasticity, and therefore the occasion of using is also more, because every field difference, the sealing medium difference, increasing occasion needs this kind pad to have characteristics such as anticorrosive when causing using, and conventional single rubber sheet gasket then can't satisfy above-mentioned requirements, make the sealing surface weak effect, adpting flange is easy to wear.
The model utility content
The purpose of this utility model is to be the deficiency that solves the problems of the technologies described above, and a kind of tetrafluoro rubber sheet gasket is provided, and it is simple in structure, and good sealing effect also has characteristics such as anticorrosive.
The utility model is the deficiency that solves the problems of the technologies described above, and the technological scheme that is adopted is: a kind of tetrafluoro rubber sheet gasket, constitute by the rubber matrix and the polytetrafluoroethylcoatings coatings of ring-type, and the thickness of polytetrafluoroethylcoatings coatings is 0.5-1.5mm.
The end face of described rubber matrix is provided with positioning hole.
The beneficial effects of the utility model are:
1, the utility model is made of rubber matrix and polytetrafluoroethylcoatings coatings, not only has quite excellent compressibility and rebound elasticity, and has excellent corrosion resistance, can be widely used in the valve seal field of industry such as chemistry, petrochemical industry, pharmacy.
2, this pad has good plasticity, only need minimum fastening force just can under the operating mode of low-temp low-pressure, bring into play the effective seal effect, and when dismantling, can not divide flange yet, to flanged surface by good sealing effect, because it has outstanding dilatancy and permeability resistance, seal very effectively simultaneously for the formation of passing through of resisting gas machine fluid.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is along the sectional view of A-A line among Fig. 1.
Mark among the figure: 1, rubber matrix, 2, polytetrafluoroethylcoatings coatings, 3, positioning hole.
Embodiment
As depicted in figs. 1 and 2, a kind of tetrafluoro rubber sheet gasket is provided with the rubber matrix 1 of a ring-type, is provided with polytetrafluoroethylcoatings coatings 2 on rubber matrix 1, is provided with a plurality of positioning holes 3 on the end face of rubber matrix 1.
Medium according to the size of flanged surface and sealing is different, rationally adjusts the area size and the coating thickness of polytetrafluoroethylcoatings coatings 2, the preferred 0.5-1.5mm of thickness.
The thickness of rubber matrix 1 is generally determined according to the size reasonable in flange handing-over space.
This pad has good plasticity, only need minimum fastening force just can under the operating mode of low-temp low-pressure, bring into play the effective seal effect, and when dismantling, can not divide flange yet, to flanged surface by good sealing effect, because it has outstanding dilatancy and permeability resistance, seal very effectively simultaneously for the formation of passing through of resisting gas and fluid.
The utility model is made of rubber matrix and polytetrafluoroethylcoatings coatings, not only has quite excellent compressibility and rebound elasticity, and has excellent corrosion resistance, can be widely used in the valve seal field of industry such as chemistry, petrochemical industry, pharmacy.
Claims (2)
1. tetrafluoro rubber sheet gasket is characterized in that: rubber matrix (1) and polytetrafluoroethylcoatings coatings (2) by ring-type constitute, and the thickness of polytetrafluoroethylcoatings coatings (2) is 0.5-1.5mm.
2. a kind of tetrafluoro rubber sheet gasket according to claim 1 is characterized in that: the end face of described rubber matrix (1) is provided with positioning hole (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205912947U CN201884643U (en) | 2010-11-04 | 2010-11-04 | Tetrafluoro-rubber gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205912947U CN201884643U (en) | 2010-11-04 | 2010-11-04 | Tetrafluoro-rubber gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201884643U true CN201884643U (en) | 2011-06-29 |
Family
ID=44182184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205912947U Expired - Fee Related CN201884643U (en) | 2010-11-04 | 2010-11-04 | Tetrafluoro-rubber gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201884643U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367898A (en) * | 2011-09-22 | 2012-03-07 | 航天材料及工艺研究所 | Thin-wall flange flat-groove dual seal structure used under complex working condition and application thereof |
| CN104455436A (en) * | 2014-12-04 | 2015-03-25 | 中国核动力研究设计院 | Electric-insulation sealing ring and structure suitable for supercritical conditions |
-
2010
- 2010-11-04 CN CN2010205912947U patent/CN201884643U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367898A (en) * | 2011-09-22 | 2012-03-07 | 航天材料及工艺研究所 | Thin-wall flange flat-groove dual seal structure used under complex working condition and application thereof |
| CN104455436A (en) * | 2014-12-04 | 2015-03-25 | 中国核动力研究设计院 | Electric-insulation sealing ring and structure suitable for supercritical conditions |
| CN104455436B (en) * | 2014-12-04 | 2016-08-31 | 中国核动力研究设计院 | A kind of electric insulation sealing ring being applicable under super critical condition and structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20151104 |
|
| EXPY | Termination of patent right or utility model |