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SAE AMS 7257D-2012 (SAE AMS7257D-2012)
Perfluorocarbon (FFKM) Engine Oil, Fuel and Hydraulic Fluid Resistant 70-80 Hardness for High Temperature Seals in Engine Oil Systems, Fuel Systems and Hydraulic Systems
This specification covers a Perfluorocarbon (FFKM) rubber in the form of molded rings, compressions seals, o-ring cord, and molded-in-place gaskets for aeronautical and aerospace applicaitons.
These products have resistance to a variety of fluids, but usage is not not limited to such applications. Each application should be considered separately. This perfluorocarbon (FFMK) has a typical service temperature range of +5 to 554 \mDF (-15 to 290 \mDC).
Society of Automotive Engineers [sae]