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Fluoroelastomer Compatibility with Advanced Jet Engine Oils
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 11, 2001 by SAE International in United States
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Prevailing trends in aircraft turbine engine applications are pushing current elastomeric seal materials to their limits. These trends include the continued drive towards more powerful, lighter weight engines, with accompanying reductions in noise, emissions and fuel consumption, as well as ongoing improvements in reliability, maintainability, and longer intervals between engine overhauls. These trends converge to push engine thermodynamics to their limits, which manifests in higher operating and soakback temperatures. As a result, engine manufacturers specify high temperature stabilized (HTS) oils in order to achieve engine performance and life targets.
Aircraft engine lubricants have had to keep pace with higher operating temperatures while still meeting stringent performance requirements and regulatory and environmental compliance. The demands on lubricant manufacturers include improved thermal oxidative stability, load carrying capability, reductions in vapor phase coking, and environmentally friendly additive systems. In order for oils to be stable at higher temperatures, different and more aggressive base stocks are often used in conjunction with sophisticated packages of surfactants and amine-based stabilizers. It is primarily the additive packages that challenge traditional fluoroelastomers to maintain long life, leak-free sealing performance.
In this paper the compatibility of various fluoroelastomers with commercial jet engine oils will be reviewed. Fluoroelastomers that have historically been used in aerospace sealing applications will be compared to several specialty types. Properties relevant to sealing devices and applications will be discussed. Laboratory testing will characterize physical properties and property retention in jet oil through 1500 hours at 200°C.
CitationThomas, E., "Fluoroelastomer Compatibility with Advanced Jet Engine Oils," SAE Technical Paper 2001-01-2974, 2001, https://doi.org/10.4271/2001-01-2974.
- Knipple R. Thich J. “The History of Aviation Turbine Lubricants” SAE Paper # 810851
- Habeeb J. J.
- Nersasian A. “The Effect of Lubricating Additives On the Properties of Fluorohydrocarbon Elastomers” presented at the 34 th Annual Meeting ASLE, St. Louis, Missouri April 30–May 3, 1979
- Hertz, D. L. Jr. “Fluorine-Containing Elastomers” http://www.sealseastern.com
- Stevens R. D. Moore A. L. “A New, Unique Viton ® Fluoroelastomer With Expanded Fluids Resistance” Paper #32, Rubber Division, American Chemical Society Cleveland, OH October 21–24 1997
- Laird J. L. Liolios G. “Thermal Analysis Techniques for the Rubber Laboratory” presented at the Rubber Division Meeting, American Chemical Society Detroit, MI October 17–20 1989
- Stevens R. D. Thomas E. W. “Low Temperature Sealing Capabilities of Fluoroelastomers” SAE Paper # 900194 February 26–March 2,1990
- “Rings, Sealing, Fluorosilicone Rubber, High Temperature Fuel and Oil Resistant” 1990
- “Gland Design, Elastomeric O-Ring Seals, General Considerations” 1973
- “Gland Design, Elastomeric ORing Seals, Static Radial” 1977
- “Aerospace Size Standard For ORings” 1984
- Dobel T. M. Bauerle J. G. “ New FKM Developments for Automotive Powertrain Applications” SAE Paper # 2000-01-0745 March 6–9 2000
- Bauerle J. G. Bruhnke D. W. “The Effects of Aeration of Test Fluids in the Retention of Physical Properties of Fluoroelastomer Vulcanizates” SAE Paper # 890362 February 27–March 3, 1989
- Dinzburg B. N. “Influence of Oil Aeration on Dynamic Shaft Seals Under Laboratory and Field Condition” SAE Paper # 930535 February 1993
- Gent A. N. “Engineering With Rubber” Hanser Publishers New York, NY 1992
- 15 20 Jan 31 1994
- 44 45 November 18 1996
- Tuckner P. “Compression Stress Relaxation Test Comparisons and Development” SAE Paper # 2000-01-0752 March 2000
- “Designing With Elastomers for Use at Low Temperatures, Near or Below Glass Transition” 1995