SAE AMS7257A
Rings, Sealing, Perfluorocarbon (Ffkm) Rubber High Temperature Fluid Resistant 70-80.
Standard:
AKA:
- AMS7257
- Revision: A
- 2011-08-15
- 1991-10-01
- Historical. Access the latest revision: AMS7257D
- Ams Ce Elastomers Committee
This specification covers a perfluorocarbon (FFKM) rubber in the form of molded o-rings. These sealing rings have been used typically in applications in contact with air or a variety of fuels, lubricants and hydraulic fluids from -15 to +290 degrees C (+5 to 554 degrees F), but usage is not limited to such applications. Each application, however, has to be considered individually. Instances are known when these rings have been used below -15 degrees C (+5 degrees F) and above 290 degrees C (554 degrees F). The cross section of such rings is usually not over 0.275 inch (6.98 mm) in diameter or thickness.
History:| Standard | Published | Revision | Status |
|---|---|---|---|
| AMS7257D | 2012-11-20 | Latest | |
| AMS7257C | 1993-07-01 | Historical | |
| AMS7257B | 1992-01-01 | Historical | |
| AMS7257A | 1991-10-01 | Historical | |
| AMS7257 | 1985-04-01 | Historical |
- SAE AMS 7257
- Aerospace
- Elastomers