CA2371537A1 - Elastomer energized rod seal with integrated backup ring - Google Patents
Elastomer energized rod seal with integrated backup ring Download PDFInfo
- Publication number
- CA2371537A1 CA2371537A1 CA 2371537 CA2371537A CA2371537A1 CA 2371537 A1 CA2371537 A1 CA 2371537A1 CA 2371537 CA2371537 CA 2371537 CA 2371537 A CA2371537 A CA 2371537A CA 2371537 A1 CA2371537 A1 CA 2371537A1
- Authority
- CA
- Canada
- Prior art keywords
- seal
- angle
- laid out
- exceeds
- apex
- 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.)
- Granted
Links
Landscapes
- Sealing Devices (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
An annular seal for sealing between a static and a dynamic machine part such as between the cylinder head and the piston rod of a hydraulic cylinder, made of a resilient material and energized by a surrounding compression ring, such as an O-Ring, the annular seal being installed with the compression ring in a common, rectangular housing groove such that it separates the compression ring from the moving surface and the downstream wall of the housing groove, the outer diameter of the seal meets or exceeds that of the groove bottom.
Claims (20)
1. An annular seal for sealing between a static and a dynamic machine part such as between the cylinder head and the piston rod of a hydraulic cylinder, made of a resilient material and energized by a surrounding compression ring, such as an o-Ring, the annular seal being installed with the compression ring in a common, rectangular housing groove such that it separates the compression ring from the moving surface and the downstream wall of the housing groove, the outer diameter of the seal meets or exceeds that of the groove bottom.
2. The seal of Claim 1 in which the outer diameter of the seal exceeds that of the groove bottom by between 0 and 1.50 mm.
3. The seal of Claim 1 in which the radial height of the seal meets or exceeds that of the housing groove.
4. The seal of Claim 1 in which the radial height of the seal exceeds that of the housing groove by between 0 and 25%.
5. The seal of Claim 1 in which the seal is laid out with a seal apex defined by an upstream seal angle of more than 15' and a downstream slip angle of more than 2'. The seal apex is in the preferred embodiment formed by the intersection of inlet and slip angle, but can be formed by a flat or a convex shape with a width of no more than 1 mm.
6. The seal of Claim 1 in which the seal is laid out with a seal apex defined by an upstream seal angle of more than 40' and a downstream slip angle of more than 10~. The seal apex is in the preferred embodiment formed by the intersection of inlet and slip angle, but can be formed by a flat or a convex shape with a width of no more than 0.75 mm.
7. The seal of Claim 1 in Which the seal is laid out with a seal apex defined by an upstream seal angle between 45 and 50', and a downstream slip angle between 12 and 17'.
8. The seal of Claim 1 in which the position of the seal apex is axially located near the center of the compression ring in its installed state.
9. The seal of Claim 1 in which the seal body is such laid out that the ratio: Radial groove height / axial distance from the seal apex to where the seal meets the groove bottom, exceeds 1.25.
10. The seal of Claim 1 in which the seal body is such laid out that the ratio: Radial groove height / axial distance from the seal apex to where the seal meets the groove bottom, exceeds 1.75.
11. The seal of claim 1 in which the seal body is such laid out that a straight line can be drawn from the seal apex through the body of the seal to the radial line defining the downstream wall of the seal, and that the first line forms an angle with the moving part of at least 40'.
12. The seal of Claim 1 in which the deal body is such laid out that a straight line can be drawn from the seal apex through the body of the seal to the radial line defining the downstream wall of the seal, and that the first line forms air angle with the moving part of at least 50'.
13. The seal of Claim 1 in which from the radial line going through the downstream end position of the compression ring the seal is such laid out, that a line can be drawn downstream from the point where the radial line intersects the moving surface, forming an angle with the moving surface of at least 7' without contacting the seal body.
14. The seal of Claim 1 in which from the radial line going through the downstream end position of the compression ring the seal is such laid out, that a line can be drawn downstream from the point where the radial line intersects the moving surface, forming an angle with the moving surface of at least 14' without contacting the seal body.
15. The seal of Claim ~ in which from the radial line going through the downstream end position of the compression ring the seal is such laid out, that a line can be drawn downstream from the point where the radial line intersects the moving surface, forming an angle with the moving surface of at least 18 and not more than 24' without contacting the seal body.
16. The seal of Claim 1 in which the outer diameter of the support ring meets or exceeds that of the groove bottom.
17, The seal of Claim 1 in which the outer. diameter of the support ring exceeds that of the groove bottom by between 0 and 0.75 mm.
18. The seal of Claim 1 in which the radial height of the support ring is equal to or less than the groove depth.
19. The seal of Claim 1 in which the internal diameter of the support ring exceeds the moving element by 0 to 0.5mm.
20. The seal of Claim 1 in which the inner surface of the support ring is to have an angle away from the moving element greater than 1' but less than 5'.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US27052601P | 2001-02-21 | 2001-02-21 | |
| US60/270,526 | 2001-02-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2371537A1 true CA2371537A1 (en) | 2002-08-21 |
| CA2371537C CA2371537C (en) | 2010-12-21 |
Family
ID=23031648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2371537 Expired - Lifetime CA2371537C (en) | 2001-02-21 | 2002-02-14 | Elastomer energized rod seal with integrated backup ring |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2002267021A (en) |
| CA (1) | CA2371537C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1925783A1 (en) | 2006-11-22 | 2008-05-28 | Siemens Aktiengesellschaft | Variable stator blade assembly |
| US10358895B2 (en) | 2014-12-30 | 2019-07-23 | Halliburton Energy Services, Inc. | Reusable pre-energized backup ring |
| US10690213B2 (en) | 2014-08-15 | 2020-06-23 | Trelleborg Sealing Solutions Germany Gmbh | Seal arrangement with damping element |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4873173B2 (en) * | 2007-06-29 | 2012-02-08 | Ｎｏｋ株式会社 | Sealing device |
| JP5447787B2 (en) * | 2009-04-07 | 2014-03-19 | Ｎｏｋ株式会社 | Reciprocating sealing device |
| US9194497B2 (en) * | 2013-09-03 | 2015-11-24 | Bal Seal Engineering, Inc. | Elastic seals with dynamic lips and related methods |
-
2002
- 2002-02-14 CA CA 2371537 patent/CA2371537C/en not_active Expired - Lifetime
- 2002-02-19 JP JP2002042292A patent/JP2002267021A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1925783A1 (en) | 2006-11-22 | 2008-05-28 | Siemens Aktiengesellschaft | Variable stator blade assembly |
| US8496430B2 (en) | 2006-11-22 | 2013-07-30 | Siemens Aktiengesellschaft | Variable stator blade assembly |
| US10690213B2 (en) | 2014-08-15 | 2020-06-23 | Trelleborg Sealing Solutions Germany Gmbh | Seal arrangement with damping element |
| US10358895B2 (en) | 2014-12-30 | 2019-07-23 | Halliburton Energy Services, Inc. | Reusable pre-energized backup ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2371537C (en) | 2010-12-21 |
| JP2002267021A (en) | 2002-09-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20220214 |