Product Code:SAE AS5860
Title:Retainers (Back-Up Rings), Hydraulic and Pneumatic, Polytetrafluoroethylene Resin, Single Turn, Static Gland
Issuing Committee:A-6c2 Seals Committee
Scope:This Aerospace Standard (AS) covers scarf-cut polytetrafluoroethylene (PTFE) retainers (back-up rings) for use in static glands in accordance with AS5857. They are for use in hydraulic and pneumatic system components as anti-extrusion devices in conjunction with O-rings, packings and other elastomeric seals.Because of the construction of groove dimensions, back-ups specific to rod applications are designated 驴R驴 - Rod (Female), back-ups specific to piston applications are designated 驴P驴 - Piston (Male).Retainers specified herein have been designed for a temperature range of -65 驴F to 275 驴F (-54 驴C to 135 驴C) and a nominal operating pressure of 3000 psi (20.7 MPa) for code 09 material and 5000 psi (34.5 MPa) for code 10 material. Material codes are based on AMS 3678 material types.Consideration has been made to accommodate cylinder breathing on piston applications, calculated at .002 inch/inch diameter/1,000 psi (.051 mm/mm diameter/6.9 MPa) to ensure a minimum 50% lap at -65 驴F (-54 驴C). This has required an increase in the diameter on certain larger sizes and a slight overlap at ambient will therefore be apparent. These parts have been designed such that the overlap at 275 驴F (135 驴C) will not result in axial compression of the O-rings, even in the worst tolerance stack-up situation.

标准名称：	高抗剪铆钉通用规范
英文名称：	Fastener blind high strength installation formed general specification for
中标分类：	航空、航天 >> 航空器与航天器零部件 >> 紧固件
ICS分类：	航空器和航天器工程 >> 航空航天制造用紧固件 >> 铆钉
替代情况：	HB 1-608-1983部分
发布日期：	2005-12-26
实施日期：	2006-05-01
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