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Gland Design, O-Ring and Other Elastomeric Seals, Static Applications
- Aerospace Standard
Published August 17, 2022 by SAE International in United States
Downloadable datasets availableAnnotation ability available
This SAE Aerospace Standard (AS) provides standardized gland (groove) design criteria and dimensions for elastomeric seal glands for static applications. The glands have been specifically designed for applications using SAE AS568 size O-rings at pressures exceeding 1500 psi (10.3 MPa) utilizing one or two anti-extrusion (backup) rings and applications at pressures under 1500 psi (10.3 MPa) without backup rings. The glands have been sized to provide increased squeeze as compared to AS4716 for more effective sealing at low temperatures and low seal swell conditions. These glands are not recommended for dynamic use. Primary usage is for static external sealing.
The rod dimensions are the same as AS4716. The cylinder bore dimensions are the same as AS4716 except for sizes -001 thru -011 and -104 thru -113.
AS5857A has been reaffirmed to comply with the SAE Five-Year Review policy.
Data Sets - Support Documents
|Unnamed Dataset 1|
|TABLE 1A||STANDARD GLAND DIMENSIONS IN INCHES|
|TABLE 1B||O-RING PERCENTAGE STRETCH AND SQUEEZE|
|TABLE 1C||STANDARD GLAND DIMENSIONS IN MILLIMETERS|
|TABLE 2A||STANDARD GLAND WIDTH FOR ZERO, ONE, AND TWO BACKUP IN INCHES|
|TABLE 2B||STANDARD GLAND WIDTH FOR ZERO, ONE, AND TWO BACKUP IN MILLIMETERS|
|TABLE 3A||STANDARD GLAND DIAMETRAL CLEARANCE DIMENSIONS IN INCHES|
|TABLE 3B||STANDARD GLAND DIAMETRAL CLEARANCE DIMENSIONS IN MILLIMETERS|
|TABLE 4||STANDARD CORNER RADIUS DIMENSIONS IN INCHES & MILLIMETERS|
|TABLE 5||ECCENTRICITY FOR STANDARD GLANDS IN INCHES & MILLIMETERS|
|TABLE 6||SURFACE ROUGHNESS REQUIREMENTS|
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