Browse Standards AS4716B
Historical REVISED 2011-03-14

Gland Design, O-ring and Other Elastomeric Seals AS4716B

This SAE Aerospace Standard (AS) provides standardized gland (groove) design criteria and dimensions for elastomeric seal glands for static and dynamic applications. The glands have been specifically designed for applications using SAE AS568 size O-rings, with related class 2 tolerances, at pressures exceeding 1500 psi (10.34 MPa) utilizing one or two anti-extrusion (backup) rings and applications at pressures below 1500 psi (10.34 MPa) without backup rings. The glands have been sized to provide sufficient squeeze for effective sealing while at the same time limiting squeeze to allow satisfactory operation in dynamic applications. While this specification covers the basic design criteria and recommendations for use with standard size O-rings, these glands are also suitable for use with other elastomeric, and polytetrafluoroethylene (PTFE) based seals. For static external applications i.e. where the application is overboard and sealing to atmosphere, glands should be designed in accordance with AS5857.
AS4716D
2021-11-09
Latest
Revised
AS4716C
2017-12-12
Historical
Revised
AS4716B
2011-03-14
Historical
Revised
AS4716A
2005-07-21
Historical
Revised
AS4716
1993-06-11
Historical
Issued

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