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Standard

Rings, Sealing, Perfluorocarbon (Ffkm) Rubber High Temperature Fluid Resistant 70-80

1991-10-01
HISTORICAL
AMS7257A
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.
Standard

Rings, Sealing, Perfluorocarbon (Ffkm) Rubber High Temperature Fluid Resistant 70-80

1992-01-01
HISTORICAL
AMS7257B
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.
Standard

Rings, Butadiene-Acrylonitrile (Nbr) Rubber, Molded Fuel and Low Temperature Resistant 70-80

1962-01-01
HISTORICAL
AMS7260A
This specification covers a fuel and low-temperature resistant butadiene- acrylonitrile (NBR) rubber in the form of molded rings. These rings have been used typically for gland type packings and seals in flexible couplings for use at temperatures from -55 degrees to 100 degrees C (-67 to 212 degrees F) where resistance to fuel is required, but usage is not limited to such applications.
Standard

Rings, Butadiene-Acrylonitrile (Nbr) Rubber, Molded Fuel and Low Temperature Resistant 70-80

1955-03-01
HISTORICAL
AMS7260
This specification covers a fuel and low-temperature resistant butadiene- acrylonitrile (NBR) rubber in the form of molded rings. These rings have been used typically for gland type packings and seals in flexible couplings for use at temperatures from -55 degrees to 100 degrees C (-67 to 212 degrees F) where resistance to fuel is required, but usage is not limited to such applications.
Standard

Rings, Sealing, Fluorocarbon (Fkm) Rubber High-Temperature-Fluid Resistant Low Compression Set 85 to 95

1992-01-01
HISTORICAL
AMS7259B
This specification covers a fluorocarbon (FKM) rubber in the form of O-rings, O-ring cord, compression seals and molded-in-place gaskets. These products have been used typically as sealing rings, compression seals, and molded-in-place gaskets in contact with air and a wide variety of fuels, lubricants, and specific hydraulic fluids from -29 to +260 degrees C (-200 to +500 degrees F), but usage is not limited to such application, each application however should be considered individually. This class of fluoroelastomers is not recommended for use in high temperature stabilized, "HTS", engine oils. Each "HTS" oil should be evaluated separately.
Standard

Rings, Sealing, Fluorocarbon (Fkm) Rubber High-Temperature-Fluid Resistant Low Compression Set 85 to 95

1990-07-01
HISTORICAL
AMS7259A
This specification covers a fluorocarbon (FKM) rubber in the form of O-rings, O-ring cord, compression seals and molded-in-place gaskets. These products have been used typically as sealing rings, compression seals, and molded-in-place gaskets in contact with air and a wide variety of fuels, lubricants, and specific hydraulic fluids from -29 to +260 degrees C (-200 to +500 degrees F), but usage is not limited to such application, each application however should be considered individually. This class of fluoroelastomers is not recommended for use in high temperature stabilized, "HTS", engine oils. Each "HTS" oil should be evaluated separately.
Standard

Rings, Sealing, Fluorocarbon (Fkm) Rubber High-Temperature-Fluid Resistant Low Compression Set 85 to 95

1983-01-01
HISTORICAL
AMS7259
This specification covers a fluorocarbon (FKM) rubber in the form of O-rings, O-ring cord, compression seals and molded-in-place gaskets. These products have been used typically as sealing rings, compression seals, and molded-in-place gaskets in contact with air and a wide variety of fuels, lubricants, and specific hydraulic fluids from -29 to +260 degrees C (-200 to +500 degrees F), but usage is not limited to such application, each application however should be considered individually. This class of fluoroelastomers is not recommended for use in high temperature stabilized, "HTS", engine oils. Each "HTS" oil should be evaluated separately.
Standard

Rings, Butadiene-Acrylonitrile (Nbr) Rubber, Molded Fuel and Low Temperature Resistant 70-80

1965-02-01
HISTORICAL
AMS7260B
This specification covers a fuel and low-temperature resistant butadiene- acrylonitrile (NBR) rubber in the form of molded rings. These rings have been used typically for gland type packings and seals in flexible couplings for use at temperatures from -55 degrees to 100 degrees C (-67 to 212 degrees F) where resistance to fuel is required, but usage is not limited to such applications.
Standard

Rings, Sealing, Perfluorocarbon (Ffkm) Rubber High Temperature Fluid Resistant 70-80

1985-04-01
HISTORICAL
AMS7257
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.
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