SAE AS5781A-2015 PDF

Scope: "This SAE Aerospace Standard (AS) covers scarf-cut polytetrafluoroethylene (PTFE) retainers (backup rings) for use in glands in accordance with AS4716. They are for use in hydraulic and pneumatic system components as anti-extrusion devices in conjunction with O-rings@ packings and other elastomeric seals for static and dynamic applications. Because of the construction of groove dimensions@ backup rings specific to rod applications are designated ""R"" - Rod (Female)@ backup rings specific to piston applications are designated ""P"" - Piston (Male). Piston and rod types of virgin pigmented PTFE are also identified by color code which also distinguishes parts to this standard from those made from virgin PTFE to other standards. Field of Application Backup rings specified herein have been designed for a temperature range of -65 to 275 ??(-54 to 135 ?? and a nominal operating pressure of 3000 psi (20 684 kPa) for code 09 material (AMS3678/9). Alternate materials to AMS3678 are offered for more arduous operating conditions. This specification includes material tests but does not include hydraulic or pneumatic performance tests."

SAE AS5781A-2015 history

2021 SAE AS5781C-2021 Retainers (Backup Rings), Hydraulic and Pneumatic, Polytetrafluoroethylene Resin, Single Turn, Scarf-Cut, For Use in AS4716 Glands
2020 SAE AS5781B-2020 Retainers (Backup Rings), Hydraulic and Pneumatic, Polytetrafluoroethylene Resin, Single Turn, Scarf-Cut, For Use in AS4716 Glands
2015 SAE AS5781A-2015 Retainers (Backup Rings)@ Hydraulic and Pneumatic@ Polytetrafluoroethylene Resin@ Single Turn@ Scarf-Cut@ For Use in AS4716 Glands
2013 SAE AS5781-2013 Retainers (Backup Rings), Hydraulic and Pneumatic, Polytetrafluoroethylene Resin, Single Turn, Scarf-Cut, For Use in AS4716 Glands
2007 SAE AS5781-2007 Retainers (Backup Rings), Hydraulic and Pneumatic, Polytetrafluoroethylene Resin, Single Turn, Scarf-Cut, For Use in AS4716 Glands