AS5781B: Retainers (Backup Rings), Hydraulic and Pneumatic, Polytetrafluoroethylene Resin, Single Turn, Scarf-Cut, For Use in AS4716 Glands - Technical Standard

Features

Issuing Committee: A-6C2 Seals Committee

Scope

Content: This SAE Aerospace Standard (AS) specifies scarf-cut polytetrafluoroethylene (PTFE) retainers (backup rings) for use in glands in accordance with AS4716. They are usually used in hydraulic and pneumatic system components as anti-extrusion devices in conjunction with O-rings and other seals for static and dynamic applications.

NOTE: This specification includes material tests but does not include hydraulic or pneumatic performance tests.

Rationale

Content

This document has been revised to:

Add the requirement that no resizing of parts during the manufacturing process is permitted
Clarify the use in AS4716 glands
Delete the dimensional stability test requirement of parts (since this test is performed on each lot of molded material as required by AMS3678)
Add the dimensional stability requirement of material tubes to 4.1
Include some editorial corrections and improvements
Update the references

Meta Tags

Topics: Seals and gaskets
Materials testing
Materials properties
Manufacturing processes
Tensile strength
Identification numbers
Glass fibers

Details

DOI: https://doi.org/10.4271/AS5781B

Pages: 29

Citation: SAE International Technical Standard, Retainers (Backup Rings), Hydraulic and Pneumatic, Polytetrafluoroethylene Resin, Single Turn, Scarf-Cut, For Use in AS4716 Glands, SAE Standard AS5781B, Revised August 2020, Reaffirmed November 2013, Issued July 2007, https://doi.org/10.4271/AS5781B.

Additional Details

Publisher: SAE International

Published: Aug 25, 2020

Product Code: AS5781B

Content Type: Technical Standard

Status: Revised

Language: English

Historical