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Face Seal Gland Design, Static, O-ring and Other Seals for Aerospace Hydraulic and Pneumatic Applications
- Aerospace Standard
- AS6235
- Issued
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This SAE Aerospace Standard (AS) specifies standardized gland design criteria and dimensions for static face seals for internal pressure and external pressure applications for aerospace hydraulic and pneumatic applications using the same size range as AS4716 and AS5857 where applicable. Some small diameter sizes are excluded because they are not practical.
The glands have been specifically designed for applications using AS568 size elastomeric O-rings with related Class 2 tolerances at nominal system operating pressures up to 3000 psi (20 680 kPa) utilizing no anti-extrusion (backup) rings.
While the gland dimensions herein have been designed for pressures up to 3000 psi (20 680 kPa) these glands may be used for higher pressures, but extra precautions need to be taken and testing should be performed to ensure to ensure integrity of performance.
This specification covers the basic design criteria and recommendations for use with standard size elastomeric O-rings, however, these glands are also suitable for use with other elastomeric and polytetrafluoroethylene (PTFE) based seal geometries.
Rationale
It has been identified that there is a requirement to compile a document that provides standard face seal gland dimensions for static aerospace fluid power applications. This document satisfies this requirement.
Recommended Content
Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 | ||
Unnamed Dataset 4 | ||
Unnamed Dataset 5 | ||
TABLE 1 | MAXIMUM AND MIMIMUM SQUEEZE LEVELS AT VARIOUS TEMPERATURE LIMITS (EXCLUDING VOLUME SWELL) | |
Unnamed Dataset 7 | ||
TABLE 2 | GROOVE CROSS SECTION DETAILS FOR INTERNAL PRESSURE APPLICATIONS | |
TABLE 3 | GROOVE CROSS SECTION DETAILS FOR EXTERNAL PRESSURE APPLICATIONS | |
TABLE 4 | GROOVE BREAK EDGE DETAILS | |
TABLE 5 | GROOVE STANDARD CORNER RADIUS DIMENSIONS | |
TABLE 6 | SURFACE ROUGHNESS REQUIREMENTS | |
TABLE 7 | STANDARD GROOVE DIAMETERS FOR INTERNAL AND EXTERNAL PRESSURE APPLICATIONS | |
Unnamed Dataset 14 | ||
TABLE B1A | COMPARISON OF GROOVE DIAMETERS, AS6235, ARP1234, AS4873 (INCHES) | |
TABLE B1B | COMPARISON OF GROOVE DIAMETERS, AS6235, ARP1234, AS4873 (MILLIMETERS) | |
TABLE 2 | GLAND CROSS SECTION DETAILS FOR INTERNAL PRESSURE APPLICATIONS | |
TABLE 3 | GLAND CROSS SECTION DETAILS FOR EXTERNAL PRESSURE APPLICATIONS | |
TABLE C1A | MAXIMUM & MINIMUM GROOVE DEPTHS FOR AS4716 AND AS5857 PISTON SEAL HARDWARE (INCHES) | |
TABLE C1B | MAXIMUM & MINIMUM GROOVE DEPTHS FOR AS4716 AND AS5857 PISTON SEAL HARDWARE (MILLIMETERS) |
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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