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 Primary Material
Code 09, Virgin PTFE with pigment: Parts made to material code 09 of this standard shall conform to AMS3678/9, Pigmented Virgin PTFE, Molded.
• Parts made to material code 09 of this standard for “R” (Rod) applications shall be blue per AMS3678/9.
• Parts made to material code 09 of this standard for “P” (Piston) applications shall be yellow per AMS3678/9.
NOTE: Green pigmented material to AMS3678/9 is for use for “R” (Rod) backup rings to AS5860 and AS5861. Brown pigmented material to AM53678/9 is for use for “P” (Piston) backup rings to AS5860 and A55861.
Details of material specification, material code, color, composition, application and pressures for code 09 materia’ applicable to this document are listed in Table 1. Other data is for alternate materials or for reference only.
3.2.2 Alternate Materials
As indicated above, the AMS3678/9 is the primary material recommended for these backup rings because of their pigmented colors for identification. The other materials listed in Table 1, except AM5367811 and AM53678/4, can also be ordered by using the part identification numbers of this standard.
NOTE: When alternate materials are selected it is recommended that adequate performance for the application be verified by operational testing.
NOTES: . 1. Material to AMS3678/1 Grade A and Grade B is not to be used because both have lower physical properties and, therefore, lower performance than AMS3678/9. 2. Glass fibers can be abrasive, particularly in dynamic applications and against soft surfaces such as aluminum and some grades of titanium and stainless steels. 3. Usually used for manufacturer’s proprietary pigment colors. 4. Not usually recommended for hydraulic systems as bronze particles can clog filters. 5. Maximum pressures indicated are for guidance purposes only and for pressures above 3000 psi (20 684 kPa) testing is recommended. 6. Material ‘Designation Codes’ are derived from the appropriate slash sheets of AMS3678. 3.2.3 Color ldentification for Materials Other Than Code 09 Color pigmentation for material to AMS3678/5 is usually proprietary per manufacturer. There is no color pigmentation applied to materials to AMS3678/1, AMS3678/2, AMS3678/3, AMS3678/4, AMS3678/6, AMS3678/7, AMS3678/8, and AMS3678/10.SAE AS 5782A pdf download.