Form: This specification covers a high temperature fluid resistant perfluorocarbon (FFKM) rubber in the form of molded O-rings. Application: 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 ??(5 to 555 ??@ 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 ??(5 ?? and above 290 ??(555 ??. The cross section of such rings is usually not over 0.275 inch (6.98 mm) in diameter or thickness. Standard sizes are as shown in AS568. Safety- Hazardous Materials: While the materials@ methods@ applications@ and processes described or referenced in this specification may involve the use of hazardous materials@ this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe an proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved.
SAE AMS7257B-1992 history
2014SAE AMS7257E-2014 Rings, Sealing, Perfluorocarbon (Ffkm) Rubber High Temperature Fluid Resistant 70-80
2012SAE AMS7257D-2012 Rings, Sealing, Perfluorocarbon (FFKM) Rubber High Temperature Fluid Resistant 70 - 80
2011SAE AMS7257A-2011 RINGS, SEALING, PERFLUOROCARBON RUBBER High Temperature Fluid Resistant FFKM Type 70-80
1998SAE AMS7257C-1998 Rings, Sealing, Perfluorocarbon (FFKM) Rubber High Temperature Fluid Resistant 70 - 80
1993SAE AMS7257C-1993 Rings, Sealing, Perfluorocarbon (FFKM) Rubber High Temperature Fluid Resistant 70 - 80
1992SAE AMS7257B-1992 RINGS@ SEALING@ PERFLUOROCARBON (FFKM) RUBBER High Temperature Fluid Resistant 70 - 80
1986SAE AMS7257A-1986 RINGS@ SEALING@ PERFLUOROCARBON RUBBER High Temperature Fluid Resistant FFKM Type 70-80
1985SAE AMS7257-1985 RINGS@ SEALING@ PERFLUOROCARBON RUBBER High Temperature Fluid Resistant FFKM Type 75-85