CN201531592U - Rubber-polytetrafluoroethylene compound seal ring - Google Patents
Rubber-polytetrafluoroethylene compound seal ring Download PDFInfo
- Publication number
- CN201531592U CN201531592U CN2009202497776U CN200920249777U CN201531592U CN 201531592 U CN201531592 U CN 201531592U CN 2009202497776 U CN2009202497776 U CN 2009202497776U CN 200920249777 U CN200920249777 U CN 200920249777U CN 201531592 U CN201531592 U CN 201531592U
- Authority
- CN
- China
- Prior art keywords
- rubber
- seal ring
- ring
- compound seal
- polytetrafluoroethylene
- 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 - Lifetime
Links
- 150000001875 compounds Chemical class 0.000 title claims abstract description 16
- 229920001343 polytetrafluoroethylene Polymers 0.000 title abstract 5
- 239000004810 polytetrafluoroethylene Substances 0.000 title abstract 5
- 229920001971 elastomer Polymers 0.000 claims abstract description 29
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 19
- 239000004945 silicone rubber Substances 0.000 claims abstract description 19
- 239000004809 Teflon Substances 0.000 claims description 23
- 229920006362 Teflon® Polymers 0.000 claims description 23
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- -1 polytetrafluoroethylene Polymers 0.000 abstract description 3
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 229920002449 FKM Polymers 0.000 description 8
- 239000003921 oil Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 208000007101 Muscle Cramp Diseases 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- NICDRCVJGXLKSF-UHFFFAOYSA-N nitric acid;trihydrochloride Chemical compound Cl.Cl.Cl.O[N+]([O-])=O NICDRCVJGXLKSF-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Sealing Material Composition (AREA)
Abstract
A rubber-polytetrafluoroethylene compound seal ring comprises a ring-shaped body made of silicone rubber or fluorous rubber, and is characterized in that a polytetrafluoroethylene felt layer is wrapped outside the ring-shaped body. The compound seal ring in the utility model comprehensively improves the mechanical property and chemical stability of a rubber seal ring and the wear resisting property and medium corrosion resistance of a compound seal ring, enhances the corrosion resistance, anti-sticking performance and higher sealing rebound resilience of rubber, increases the oil resistance of a rubber surface, remarkably improves the high-temperature and low-temperature resistances of the rubber surface and reduces the friction and abrasiveness, not only keeps the physical mechanical property of the rubber unchanged, but also improves the strength and rigidity of the rubber, moreover, further enlarges the application range of the rubber seal ring, and remarkably prolongs the service life of the rubber seal ring coated with the polytetrafluoroethylene felt by 5 to 6 times. The rubber-polytetrafluoroethylene compound seal ring in the utility model is suitable for pipeline system equipment in chemical engineering industry and the like.
Description
Technical field:
The utility model relates to a kind of rubber seal, particularly relates to the compound seal ring of a kind of rubber-teflon.
Background technique:
All use seal ring at the pipeline of the pipeline technology system of chemical industry etc. and the joint of equipment, the requirement of these sealing ring materials is heat-resisting good with low temperature properties, anti-dielectric corrosion, dissolving and aging and good springiness, friction factor is little, wear-resisting etc., sealing ring material also will have excellent mechanical intensity, meet the indeformable little characteristic of profit, in addition, requirement after compression and in long-term the use residual deformation little, sealing ring material commonly used is a rubber, the good sealing effect of rubber seal, most widely used general, normally used have silicone rubber O-ring and a viton seal ring etc.
The operating temperature of silicone rubber O-ring is-60 ℃ to+250 ℃, under 150-180 ℃, can use for a long time, the winter hardiness of silicone rubber O-ring is fine, can under-60 ℃ or lower temperature, use, silicone rubber O-ring is not only high temperature resistant but also low temperature resistant, be cold-resistant preferably at present, the high-temperature resistant rubber seal ring, stability to thermal oxidation and ozone is very high simultaneously, also anti-atmospheric aging, silicone rubber O-ring compression set is little, and it is nonpoisonous and tasteless, but the tensile breaking strength of silicone rubber O-ring, mechanical property such as tearing toughness and wear resistance is relatively poor, its physical and mechanical properties is not as most of elastomeric seal circles at normal temperatures, and general silicone rubber O-ring is to strong acid, chemical stabilities such as the resistance to corrosion of alkali and organic solvent and oil resistant are relatively poor, in addition, silicone rubber O-ring gradually shortens working life along with temperature raises then, so silicone rubber O-ring should not be used for the occasion of usual terms, but is highly suitable for many specific purposes, as is used for anti-height, the sealing of low temperature.
The general serviceability temperature scope of viton seal ring is-30 ℃ to+250 ℃, be characterized in acid resistant alkali, oil resistance is best in the oil resistant rubber seal ring, mechanical property, chemical resistance, anti-ozone, resistance to weathering are all good, all have resistivity for most oil product and solvent, especially acids, aliphatic hydrocarbon, aromatic hydrocarbon and vegetable and animals oils medium etc., shortcoming is that winter hardiness is poor, elasticity is lower, and the mixture medium that is not suitable for being used for ketone, low-molecular-weight ester class and contains nitre.
Because the performance quality of rubber seal all has very big influence to the sealing and the performance of whole tubing, yet, also there is defective in material such as silicone rubber O-ring or viton seal ring at aspects such as physics, chemical stability and high-and low-temperature resistance and intensity, be difficult to satisfy the usage requirement under the environment of coexistences such as condition harsh temperatures, pressure and chemical mediator, so can cause in all uses such as leakage, insecure problem, shortened maintenance prompt, and maintenance resulted in hand cramps, also be subjected to the restriction of certain limit simultaneously in the use.
Summary of the invention:
The purpose of this utility model is to provide a kind of rubber-teflon compound seal ring, it not only can comprehensively improve the mechanical property and the chemical stability of rubber seal, and, can realize good seal action to the joint of pipe-line system and equipment, simultaneously, also prolonged working life.
Solution of the present utility model to achieve the above object is: the compound seal ring of rubber-teflon of the present utility model comprises a ring bodies, described ring bodies is silicone rubber ring-type body or fluorine rubber ring bodies, and described ring bodies is coated with a teflon carpet veneer.Described ring bodies is the hollow annular body.
The utility model has coated a teflon carpet veneer outside the ring bodies of silicone rubber O-ring or viton seal ring after, the sealability of original silicone rubber O-ring or viton seal ring and the adaptability of service condition have been improved fully.
Teflon is the straight chain polymer polymer that is polymerized by tetrafluoroethylene monomer, and its density is 2.2g/cm3, and water absorption rate is less than 0.01%, chemical stability, good electrical property, and fire-retardant.
Because C-F key bond energy height, stable performance, thereby its chemical resistance is splendid, alkali metal, fluorinated dielectric be can bear and all strong acid (comprising chloroazotic acid) and highly basic 300 ℃ the sodium hydroxide are higher than except fusion, and the effect of strong oxidizer, reducing agent and various organic solvents.
Owing to do not have hydrogen bond in the teflon structure of molecule, symmetrical configuration, (general degree of crystallinity is 55%-75% so its degree of crystallinity is very high, sometimes up to 94%), make the teflon resistance to heat fabulous, its melt temperature is 324 ℃, decomposition temperature is 415 ℃, and brittle temperature is-190 ℃, and heat distortion temperature (under the 0.46MPa condition) is 120 ℃, long-term serviceability temperature scope is-200 ℃ to+260 ℃, instantaneous serviceability temperature can reach 290 ℃, and teflon low temperature resistant has favorable mechanical toughness, even temperature drops to-196 ℃, also can keep 5% elongation percentage.
In addition, the good mechanical properties of teflon, its tensile strength is 21-28MPa, fibre object is higher, and flexural strength is 11-14MPa, and elongation percentage is 250%-300%, static and dynamic friction coefficient to steel is 0.04, and is all littler than the friction factor of nylon, polyoxymethylene, polyester plastics.
Generally speaking, teflon has good Physical Mechanical, chemical stability, sealing, media-resistant corrosion and resistance to weathering energy, using scope is wide, good self lubricity is arranged, viscosity not, friction factor is very little etc., and the teflon felt that is made into adopts physical method to be coated on the outer surface of silicone rubber O-ring or viton seal ring, can improve the wear-resisting property and the medium-resistance of silicone rubber O-ring or viton seal ring comprehensively, strengthen the corrosion resistance of single rubber, antistick characteristic, prevent that the oiliness molecule is to swell rubber, increase the rubber covering oil resistance, reduce the surface friction factor of single rubber product greatly, reduce the rubber wearing and tearing, it is high temperature resistant obviously to improve rubber covering, cryogenic property, friction wear obviously reduces, and the physical and mechanical properties of single rubber is remained unchanged, but also can improve intensity and hardness, two kinds of materials also can be realized complementation simultaneously.In addition, the ring bodies of the compound seal ring of described rubber-teflon of the present utility model is made the integral, flexible performance that the hollow annular body can help further to improve rubber seal.Though the utility model has increased cost relatively to rubber seal, but the using scope that makes rubber seal has obtained further expansion, and, can obviously improve 5～6 times through the silicone rubber O-ring of coating teflon felt or the operating life of viton seal ring, and cost performance is improved.
Description of drawings:
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the schematic representation of the compound seal ring of rubber-teflon of the present utility model.
Fig. 2 is the cross-sectional schematic of Fig. 1.
Embodiment:
Below with reference to accompanying drawing the compound seal ring of rubber-teflon of the present utility model is described in further detail.
Referring to Fig. 1 and Fig. 2, the compound seal ring of the rubber-teflon of this model utility includes a ring bodies 1, described ring bodies 1 is silicone rubber ring-type body or fluorine rubber ring bodies, described ring bodies 1 is hollow 3 ring bodies, and described hollow 3 ring bodies are wrapped with a teflon carpet veneer 2.
With described ring bodies 1 transformation of the way of the compound seal ring of rubber-teflon of the present utility model for being rectangle shape or square shape and also belong to protection category of the present utility model.
Claims (2)
1. compound seal ring of rubber-teflon, it comprises a ring bodies (1), described ring bodies (1) is silicone rubber ring-type body or fluorine rubber ring bodies, it is characterized in that described ring bodies (1) is wrapped with a teflon carpet veneer (2).
2. the compound seal ring of rubber-teflon according to claim 1 is characterized in that described ring bodies (1) is hollow (3) ring bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202497776U CN201531592U (en) | 2009-10-28 | 2009-10-28 | Rubber-polytetrafluoroethylene compound seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202497776U CN201531592U (en) | 2009-10-28 | 2009-10-28 | Rubber-polytetrafluoroethylene compound seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201531592U true CN201531592U (en) | 2010-07-21 |
Family
ID=42526996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202497776U Expired - Lifetime CN201531592U (en) | 2009-10-28 | 2009-10-28 | Rubber-polytetrafluoroethylene compound seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201531592U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943265A (en) * | 2010-08-10 | 2011-01-12 | 无锡市四方制桶有限公司 | Anticorrosion sealed rubber ring for bucket |
| CN102052462A (en) * | 2009-10-28 | 2011-05-11 | 上海金由氟材料有限公司 | Rubber-polytetrafluoroethylene compounded sealing ring |
| CN102200130A (en) * | 2011-01-21 | 2011-09-28 | 佛山市广顺电器有限公司 | Seal structure of oil-free vortex compressor |
| CN103511627A (en) * | 2013-09-29 | 2014-01-15 | 无锡市晋业航空安全设备有限公司 | High-temperature resistant fabric reinforcing layer rubber seal ring for helicopter and manufacturing process thereof |
| CN104132162A (en) * | 2013-07-13 | 2014-11-05 | 浙江瓯明流体铸业有限公司 | Light-moment high-platform-type four-way linear sealing butterfly valve |
| CN104315149A (en) * | 2014-10-24 | 2015-01-28 | 中国工程物理研究院化工材料研究所 | Dynamic sealing structure resistant to high temperature and high pressure |
-
2009
- 2009-10-28 CN CN2009202497776U patent/CN201531592U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052462A (en) * | 2009-10-28 | 2011-05-11 | 上海金由氟材料有限公司 | Rubber-polytetrafluoroethylene compounded sealing ring |
| CN101943265A (en) * | 2010-08-10 | 2011-01-12 | 无锡市四方制桶有限公司 | Anticorrosion sealed rubber ring for bucket |
| CN102200130A (en) * | 2011-01-21 | 2011-09-28 | 佛山市广顺电器有限公司 | Seal structure of oil-free vortex compressor |
| CN104132162A (en) * | 2013-07-13 | 2014-11-05 | 浙江瓯明流体铸业有限公司 | Light-moment high-platform-type four-way linear sealing butterfly valve |
| CN104132162B (en) * | 2013-07-13 | 2018-08-07 | 浙江瓯明流体铸业有限公司 | A kind of low force square high platform formula four-way line style sealed butterfly valve |
| CN103511627A (en) * | 2013-09-29 | 2014-01-15 | 无锡市晋业航空安全设备有限公司 | High-temperature resistant fabric reinforcing layer rubber seal ring for helicopter and manufacturing process thereof |
| CN104315149A (en) * | 2014-10-24 | 2015-01-28 | 中国工程物理研究院化工材料研究所 | Dynamic sealing structure resistant to high temperature and high pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI JINYOU FLUORIN MATERIAL CO., LTD. Free format text: FORMER NAME: SHANGHAI JINYOU FLUORINE MATERIALS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 200137 Shanghai Gaoqiao Zhenjiang East Road, Lane 188, No. 4, building 1726, No. Patentee after: SHANGHAI JINYOU FLUORINE MATERIALS CO., LTD. Address before: 200137 Shanghai Gaoqiao Zhenjiang East Road, Lane 188, No. 4, building 1726, No. Patentee before: Shanghai JinYou Fluorine Materials Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100721 |
|
| CX01 | Expiry of patent term |