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Perfluorocarbon (FFKM) Engine Oil, Fuel and Hydraulic Fluid Resistant 70 to 80 Hardness For High Temperature Seals in Engine Oil Systems, Fuel Systems and Hydraulic Systems
- Aerospace Material Specification
- AMS7257D
- Revised
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This specification covers a Perfluorocarbon (FFKM) rubber in the form of molded rings, compression seals, o-ring cord, and molded-in-place gaskets for aeronautical and aerospace applications.
Rationale
Specification has been revised to incorporate AMS3085 (Reference Oil 300) to replace AMS3021 (Stauffer 7700), to increase the temperature for testing AMS3085 from 175 °C to 200 °C, Addition of compression set testing in AMS3085 as well as long term compression set testing (Table 1 – 3.2.7), to modify the acceptance tests (Table 2 and 3), to include qualification by responsible QPL agency to a Qualified Products List (QPL.) and to use the new specification template developed by the CE Committee.
Recommended Content
Topic
Data Sets - Support Documents
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| TABLE 1 | PROPERTIES | |
| TABLE 2 | ACCEPTANCE TESTS | |
| TABLE 3 | BATCH ACCEPTANCE TESTS |
Issuing Committee
Welcome to the AMS-CE Elastomers Committee Discussion Forum.
The AMS-CE Elastomers Committee maintains Aerospace Materials Specifications (AMS), Aerospace Recommended Practices (ARP), Aerospace Information Reports (AIR) and Aerospace Standards (AS) on elastomeric materials. AMS-CE, which reports to the Aerospace Materials Division, coordinates and maintains liaison with industry, government and other standardization groups on elastomeric materials. A significant part of this committee is concerned with elastomeric fluid sealing materials, their applications, material development, testing, quality, design parameters and design practices. No copyrighted material may be posted in this forum. SAE is not liable for opinions expressed or information posted to this forum. All information posted becomes the property of SAE.Reference
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