SAE AS 5782A:2015 pdf free.Retainers (Backup Rings), Hydraulic and Pneumatic, Polytetrafluoroethylene Resin, Solid, Un-Cut, For Use in AS4716 Glands. 3. TECHNICAL REQUIREMENTS 3.1 Metric Equivalents Dimensions and properties in inch/pound/Fahrenheit units are primary; dimensions and properties in SI units are shown as the approximate equivalents of the primary units and are presented only for information. 3.2 Materials and Applications 3.2.1...