Description / Abstract:
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 3,000 psi
(20,680 kPa) utilizing no anti-extrusion (backup) rings.
While the gland dimensions herein have been designed for
pressures up to 3,000 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 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.