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Retainers, (Backup Rings), Hydraulic and Pneumatic, Polytetrafluoroethylene Resin, Solid, Un-Cut, for Use in Static Glands to AS5857
- Aerospace Standard
- AS5861B
- Revised
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This SAE Aerospace Standard (AS) specifies solid polytetrafluoroethylene (PTFE) retainers (backup rings) for use in static glands in accordance with AS5857. They are usually for use in hydraulic and pneumatic systems as anti-extrusion devices in conjunction with O-rings and other seals.
NOTE: This specification includes material tests but does not include hydraulic or pneumatic performance tests.
Rationale
This document has been revised to:
-
Add the requirement that no resizing of parts during the manufacturing process is permitted
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Clarify the use in AS5857 glands
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Add the stabilized temperature at which measurements shall be taken
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Add the dimensional stability requirement of material tubes to 4.1
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Include some editorial corrections and improvements
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Update the references
Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| Table 1A | AS5861 backup ring dimensions (in inches) | |
| Table 1A | AS5861 backup ring dimensions (in inches) (continued) | |
| Table 1A | AS5861 backup ring dimensions (in inches) (continued) | |
| Table 1A | AS5861 backup ring dimensions (in inches) (continued) | |
| Table 1B | AS5861 backup ring dimensions (in millimeters) | |
| Table 1B | AS5861 backup ring dimensions (in millimeters) (continued) | |
| Table 1B | AS5861 backup ring dimensions (in millimeters) (continued) | |
| Table 1B | AS5861 backup ring dimensions (in millimeters) (continued) | |
| Table 1B | AS5861 backup ring dimensions (in millimeters) (continued) | |
| Table 2 | Sample size |
Issuing Committee
A6C2 is responsible for the development of standards, processes, and practices related to Seals, Scrapers and Bearings used in actuation systems for Commercial and Military air vehicles. The panel provides a forum for government engineers, prime contractors, OEMs and suppliers to exchange technical information, regulatory updates, recent technology developments, issues related to system development and in service operation and lessons learned.
Reference
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