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Perfluoroether Elastomer
- Aerospace Material Specification
- AMS7254A
- Revised
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This specification covers a perfluoroether elastomer in the form of molded rings.
Rationale
This standard was revised to clearly specify the test methods to be followed during aromatic fuel resistance testing. The original standard presented elongation and tensile strength release limits with the test procedure allowing a 30 minute conditioning at room temperature prior to property measurement after 70 hours soaking in the aromatic fuel. This was in error, and the test procedure followed should have specified, "immediate deteriorated properties", and followed testing instructions as defined in D-471, Procedure for change in Volume. This change in conditioning procedure results in a re-specification of the elongation and tensile strength release requirements. The paragraph for defining hydraulic fluid resistance testing was corrected to read AS1241. The hours required for long term compression set testing was omitted in the original AMS 7254 and Footnote 2 was added to specify the frequency at which the fluid is to be replaced during testing.
Recommended Content
| Aerospace Material Specification | Perfluoroether Elastomer |
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Topic
Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| Unnamed Dataset 3 | ||
| TABLE 1 | PROPERTIES | |
| TABLE 2 | ACCEPTANCE TESTS | |
| TABLE 3 | SUITABLE TEST SIZE |
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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