This specification covers a tetrafluoroethylene/propylene rubber (FEPM) in the form of molded rings. These rings have been used typically as static sealing rings for continuous use from -5 to +232 degrees C (+23 to +450 degrees F) in dry air, in hydraulic fluids, synthetic lubricants, and high pH chemical decontamination fluids, but usage is not limited to such applications.
SAE AMS7256A-1996 history
2014SAE AMS7256B-2014 Rings, Sealing, Tetrafluoroethylene/Propylene Rubber (Fepm) Hydraulic Fluid and Synthetic Oil Resistant 85 to 95
2003SAE AMS7256A-2003 RINGS, SEALING, TETRAFLUOROETHYLENE/PROPYLENE RUBBER (FEPM) Hydraulic Fluid and Synthetic Oil Resistant 85 to 95
1996SAE AMS7256A-1996 Rings, Sealing, Tetrafluoroethylene/Propylene Rubber (FEPM) Hydraulic Fluid and Synthetic Oil Resistant 85 to 95