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WIP Standard
2014-06-12
This specification and part standard covers polytetrafluoroethylene (PTFE) resin material and the dimensional requirements for retainers (back-up rings) previously covered by MIL-R-8791 and MIL-R-8791/1. The retainers are intended for use in hydraulic and pneumatic system components as anti-extrusion devices in conjunction with packings and O-rings.
Standard
2014-03-17
Scope is unavailable.
Standard
2014-03-11
This SAE Aerospace Standard (AS) specifies the inside diameters, cross-sections, tolerances, and size identification codes (dash numbers) for O-rings used in sealing applications and for straight thread tube fitting boss gaskets. The dimensions and tolerances specified in this standard are suitable for any elastomeric material provided that suitable tooling is available.
WIP Standard
2014-02-24
This SAE Aerospace Recommended Practice (ARP) addresses the general requirements for data recording procedures, packaging, and storing of elastomeric seals and seal assemblies which include an elastomeric element prior to the seal being assembled into hardware components. It applies specifically to those elastomeric seals and seal assemblies packaged shortly after manufacture. The information contained in this ARP is intended to be utilized by those organizations who do not have specific requirements or recommendations already in place for the control of elastomeric seals and seal assemblies. This ARP can be specified in control, storage, and procurement documents. However, when the requirements of this document are in conflict with the customer's requirements or specifications, the requirements of the customer's detailed specification shall govern.
WIP Standard
2014-02-18
The purpose of this standard is to provide the missile hydraulic and pneumatic component designer with information learned, tested and substantiated in correction of problems and failures experienced with seals that are subject to the unique requirements of missile static storage and subsequent dynamic operational conditions. This design standard is intended to facilitate more nearly optimum designs by presenting specific recommendations in the areas of materials, finishes, configurations and inspection criteria that past experiences show to be desirable and prudent.
WIP Standard
2014-02-07
This AIR is intended to disseminate data relative to the compatibility of elastomers in order to aid in O-ring and sealant selection. A secondary purpose relates to the selection of solvents and cleaning agents for components and systems containing elastomeric sealants. This document contains data relative to the chemical nature of aerospace fluids and relates each to its effect upon elastomeric components. Since the compatibilities of elastomers are determined by the compounding as well as the nature of the base polymer, the elastomers considered are limited to finished compounds for which material or performance specifications could be referenced.
Standard
2013-06-18
This SAE Aerospace Recommended Practice (ARP) presents two BASIC language computer programs to promote and standardize the computation of installed O-ring cross-section deflection hereafter referred to as 'squeeze' and the computation of gland volume. The two programs were written with line numbers and without use of any system specific BASIC commands to allow usage with as many systems as possible with a minimum of editing. The programs support entry of customary U.S. or metric dimensions.
WIP Standard
2013-03-20
THIS STANDARD ESTABLISHES THE DIMENSIONAL AND VISUAL QUALITY REQUIREMENTS, LOT REQUIREMENTS AND PACKAGING AND LABELING REQUIREMENTS FOR O-RINGS MOLDED FROM AMSXXX _____________ RUBBER. IT SHALL BE USED FOR PROCUREMENT PURPOSES.
Standard
2013-02-10
This SAE Aerospace Information Report (AIR) provides information on anti blow-by design practice for cap seals. Suggestions for piston cap seal sidewall notch design and other anti blow-by design details are also described. It also includes information on two key investigations based on the XC-142 as part of the text and as Appendix A.
Standard
2012-12-17
This document outlines proposed test methods for the qualification of O-ring packings intended for use in aircraft hydraulic systems utilizing MIL-H-5606 fluid at rated service pressures up to 3000 psi and temperatures ranging from -65 to 275 F. It will also serve as the basis for the future preparation of a complete packing specification after basic elastomer types have been established by capability of performance.
WIP Standard
2012-11-30
This AS standard provides gland dimensions for o-rings and other elastomeric seals used as static axial squeeze face seals in fluid power applications.
WIP Standard
2012-05-18
This Aerospace Recommended Practice contains useful guidance regarding hardware design and installation procedures. This type of information is usually not included in SAE seal gland standards but is considered useful to those people involved in the design and application of hydraulic systems and components that utilize standard seal glands in accordance with AS4716, AS4832, AS4088, AS4052 and AS5857.
Standard
2011-12-19
This SAE Aerospace Standard (AS) defines gland details for rod diameters from 1/4 to 15-1/2 in. inclusive corresponding to AS568 O-Ring Dash No. sizes -108/-111, -206/-222, -325/-349 and -425/-460. The gland details herein provide more space than MS33675 and sufficient to fit more efficient and reliable excludion devices. Exclusion device configurations are not specified in this document.
Standard
2011-12-19
This report is intended for use by those people involved in the design and application of high temperature hydraulic systems and components. It is, in essence, a first attempt at the standardization of seal ring, groove, and gland design for hydraulic piston heads. Specifically, the report covers some design, application, and test aspects of metallic seal rings for reciprocating hydraulic service at -65 F to +630 F fluid or ambient temperature and up to 4000 psi for cylinder diameters ranging from 1/2 inch to 6 inches. An attempt has been made to consider all features of seal ring design including configuration, materials, hardness, dimensions, surface finishes, surface treatment, leak treatment, leak testing, and general quality. In addition to this, allowable cylinder breathing and general quality requirements of mating hardware are discussed. Also, at the end of this report, there is a brief paragraph on other types of seal rings.
Standard
2011-12-19
The use of equilateral triangle cross-section hydraulic seal backup rings has been found to improve the life and reliability of high pressure O-ring seals especially for high temperature applications. This Aerospace Information Report (AIR) describes the design and operation of these backup rings, tabulates recommended seal groove and gland dimensions, offers recommendations and suggestions for their installation into hydraulic components, and outlines their advantages and limitations of their use.
WIP Standard
2011-10-30
This SAE Aerospace Standard (AS) covers solid 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 "R" - Rod (Female), back-ups specific to piston applications are designated "P" - Piston (Male). Retainers specified herein have been designed for a temperature range of -65 to 275 °F (-54 to 135 °C) and a nominal operating pressure of 3000 psi (20.6 MPa) for code 09 material and 5000 psi (34.3 MPa) for code 10 material. Material codes are based on AMS 3678 material types.
WIP Standard
2011-10-30
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 "R" - Rod (Female), back-ups specific to piston applications are designated "P" - Piston (Male). Retainers specified herein have been designed for a temperature range of -65° F to 275° F (-54° C to 135 °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° F (-54°C).
Standard
2011-05-25
This AIR documents the methodologies used to calculate the dimensions and tolerances used in the following backup rings standards: • AS5781 • AS5782 • AS5860 • AS5861 In addition, an appendix is provided which provides details of gland and backup ring design practices.
Standard
2011-03-14
This SAE Aerospace Standard (AS) provides standardized gland (groove) design criteria and dimensions for elastomeric seal glands for static and dynamic applications. The glands have been specifically designed for applications using SAE AS568 size O-rings, with related class 2 tolerances, at pressures exceeding 1500 psi (10.34 MPa) utilizing one or two anti-extrusion (backup) rings and applications at pressures below 1500 psi (10.34 MPa) without backup rings. The glands have been sized to provide sufficient squeeze for effective sealing while at the same time limiting squeeze to allow satisfactory operation in dynamic applications. While this specification covers the basic design criteria and recommendations for use with standard size O-rings, these glands are also suitable for use with other elastomeric, and polytetrafluoroethylene (PTFE) based seals. For static external applications i.e. where the application is overboard and sealing to atmosphere, glands should be designed in accordance with AS5857.
Viewing 1 to 30 of 103