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Assessment of Elastomer Volume Swelling Behavior in Aero-Derived Gas Turbine Engine Lubricants - Short Duration Test

E-34 Propulsion Lubricants Committee
  • Aerospace Standard
  • ARP7355
  • Current
Published 2020-02-20 by SAE International in United States
This method is used for determining the volume swelling effect of aero-derived gas turbine engine lubricants on elastomeric materials. It provides insight into the expected performance of a candidate lubricants impact upon elastomer swell and provides data to determine if the candidate lubricant meets specification requirements. This ARP is based upon Federal Standard 791, Method 3604.
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O-Ring Molded from AMS7273 Material

A-6C2 Seals Committee
  • Aerospace Standard
  • AS9967A
  • Current
Published 2020-01-09 by SAE International in United States
This standard establishes the dimensional and visual quality requirements, lot requirements, and packaging and labeling requirements for O-rings molded from AMS7273 rubber. It shall be used for procurement purposes.
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Management of Change Considerations for Aero Gas Turbine Engine Lubricants Under AS5780

E-34 Propulsion Lubricants Committee
  • Aerospace Standard
  • AIR6918
  • Current
Published 2019-12-02 by SAE International in United States
The intent is to provide a reference which explains the types of possible changes to AS5780 products and provide appropriate context to the QPG. All product change requests to the QPG will be evaluated on their merits recognizing the content of this AIR is guidance only.
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O-Ring Molded from AMS7287 Material, Metric

A-6C2 Seals Committee
  • Aerospace Standard
  • MA3445A
  • Current
Published 2019-07-10 by SAE International in United States
These products have been used in contact with air and a wide variety of fuels, lubricants, specific hydraulic fluids, and a variety of gas turbine engine lubricants, including higher thermo-oxidative stability (HTS) lubricants, including those conforming to MIL-PRF-23699 Class HTS, MIL-PRF-7808 Grade 4, and AS5780 Class HPC; however, usage is not limited to such applications. This material type has a typical service temperature range of -20 to +400 °F (-28 to +204 °C). These products are not suitable for use in phosphate ester based hydraulic fluids. Each application should be considered individually.
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Evaluation of Gas Turbine Engine Lubricant Compatibility with Elastomer Slabs - Long Duration Test

E-34 Propulsion Lubricants Committee
  • Aerospace Standard
  • ARP6917
  • Current
Published 2018-12-10 by SAE International in United States
This test method provides procedures for exposing specimens of elastomer material (slab form) representative to those used in gas turbine engines to aviation lubricants under extended duration and engine relevant thermal conditions. For AS5780 requirements the time is at least 1800 hours and temperatures are 100 °C to 160 °C. Positive volume change is an indication of specimen swell and subsequent negative volume change is an indication of specimen deterioration, both properties are important in the evaluation of the compatibility of the lubricant with elastomers used in the construction of the gas turbine.
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Storage of Elastomer Seals and Seal Assemblies Which Include an Elastomer Element Prior to Hardware Assembly

A-6C2 Seals Committee
  • Aerospace Standard
  • ARP5316E
  • Current
Published 2018-10-30 by SAE International in United States
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 storage period prior to installation of the elastomeric seals and seal assemblies into hardware components is commonly referred to as shelf life. 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.
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Fluid, Reference for Testing AS5780 HPC Class (Polyol) Resistant Material (Also known as Eastman Reference Oil 300)

E-34 Propulsion Lubricants Committee
  • Aerospace Material Specification
  • AMS3085B
  • Current
Published 2018-04-19 by SAE International in United States
This specification covers a neopentyl polyol ester fluid (see 8.2) with AS5780 HPC or MIL-PRF-23699 HTS Class performance.
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Guide to Engine Lubrication System Monitoring

E-32 Aerospace Propulsion Systems Health Management
  • Aerospace Standard
  • AIR1828C
  • Current
Published 2018-04-10 by SAE International in United States
This SAE Aerospace Information Report (AIR) provides information and guidance for the selection and use of technologies and methods for lubrication system monitoring of gas turbine aircraft engines. This AIR describes technologies and methods covering oil system performance monitoring, oil debris monitoring, and oil condition monitoring. Both on-aircraft and off-aircraft applications are presented. A higher-level view of lubrication system monitoring as part of an overall engine monitoring system (EMS), is discussed in ARP1587. The scope of this document is limited to those lubrication system monitoring, inspection and analysis methods and devices that can be considered appropriate for health monitoring and routine maintenance. This AIR is intended to be used as a technical guide. It is not intended to be used as a legal document or standard.
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Specification for Aero and Aero-Derived Gas Turbine Engine Lubricants

E-34 Propulsion Lubricants Committee
  • Aerospace Standard
  • AS5780D
  • Current
Published 2018-03-04 by SAE International in United States
This specification defines basic physical, chemical, and performance limits for 5 cSt grades of gas turbine engine lubricating oils used in aero and aero-derived marine and industrial applications, along with standard test methods and requirements for laboratories performing them. It also defines the quality control requirements to assure batch conformance and materials traceability, and the procedures to manage and communicate changes in oil formulation and brand. This specification invokes the Performance Review Institute (PRI) product qualification process. Requests for submittal information may be made to the PRI at the address in Appendix D Section D.2, referencing this specification. Products qualified to this specification are listed on a Qualified Products List (QPL) managed by the PRI. Additional tests and evaluations may be required by individual equipment builders before an oil is approved for use in their equipment. Approval and/or certification for use of a specific gas turbine oil in aero and aero-derived marine and industrial applications is the responsibility of the individual equipment builders and/or governmental authorities and is not implied by compliance with or qualification…
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Storage of Elastomer Seals and Seal Assemblies Which Include an Elastomer Element Prior to Hardware Assembly

A-6C2 Seals Committee
  • Aerospace Standard
  • AS5316
  • Current
Published 2017-11-21 by SAE International in United States
This SAE Aerospace Standard (AS) specifies 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. NOTE: The requirement for packaging is an integral part of the controlled storage procedure and provides a means of positive product identity from the time of manufacture to the time of assembly into a component.
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