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Elastomer: Fluorosilicone Rubber (FVMQ) Fuel and Oil Resistant 75 - 85 Durometer Type “A” Hardness For Products in Fuel Systems/Lubricating Oils

2019-02-28
CURRENT
AMS3741
This specification covers a fluorosilicone (FVMQ) elastomer that can be used to manufacture product in the form of sheet, strip, tubing, extrusions, and molded shapes. This specification should not be used for molded rings, compression seals, O-ring cord, and molded in place gaskets for aeronautical and aerospace applications without complete consideration of the end use prior to the selection of this material.
Standard

Elastomer: Fluorosilicone Rubber (FVMQ) High Temperature, High Modulus, Fuel and Oil Resistant 70 - 80 Shore A Hardness For Products in Fuel Systems/Lubricating Oils

2019-02-27
CURRENT
AMS3327E
This specification covers a fluorosilicone (FVMQ) elastomer that can be used to manufacture product in the form of sheet, strip, and molded shapes. This specification should not be used for molded rings, compression seals, O-ring cord, and molded in place gaskets for aeronautical and aerospace applications without complete consideration of the end use prior to the selection of this material.
Standard

Fluorosilicone Rubber (FVMQ) Fuel and Oil Resistant 55 – 65 Durometer Type ‘A’ Hardness For Products in Fuel Systems / Lubrication Oils

2018-05-16
CURRENT
AMS3325G
This specification covers a fluorosilicone (FVMQ) elastomer that can be used to manufacture product in the form of sheet, strip, tubing, extrusions, and molded shapes. This specification should not be used for molded rings, compression seals, O-ring cord, and molded in place gaskets for aeronautical and aerospace applications without complete consideration of the end use prior to the selection of this material.
Standard

Elastomer: Fluorosilicone (FVMQ) Rubber Fuel and Oil Resistant 45 – 55 For Products in Fuel Systems/Lubricating Oils

2017-11-21
CURRENT
AMS3330C
This specification covers a fluorosilicone (FVMQ) elastomer that can be used to manufacture product in the form of sheet, strip, tubing, extrusions, and molded shapes. This specification should not be used for molded rings, compression seals, O-ring cord, and molded in place gaskets for aeronautical and aerospace applications without complete consideration of the end use prior to the selection of this material.
Standard

ELASTOMER: FLUOROSILICONE RUBBER (FVMQ) FUEL AND OIL RESISTANT, HIGH STRENGTH 45 – 55 SHORE A HARDNESS FOR PRODUCTS IN FUEL SYSTEMS / LUBRICATING OILS

2017-11-21
CURRENT
AMS3329C
This specification covers a fluorosilicone (FVMQ) elastomer that can be used to manufacture product in the form of sheet, strip, tubing, extrusions, and molded shapes. This specification should not be used for molded rings, compression seals, O-ring cord, and molded in place gaskets for aeronautical and aerospace applications without complete consideration of the end use prior to the selection of this material.
Standard

Elastomer: Fluorosilicone Rubber (FVMQ) Fuel and Oil Resistant 65 – 75 Shore A Hardness For Products in Fuel Systems/Lubricating Oils

2017-11-20
CURRENT
AMS3331C
This specification covers a fluorosilicone (FVMQ) elastomer that can be used to manufacture product in the form of sheet, strip, tubing, extrusions, and molded shapes. This specification should not be used for molded rings, compression seals, O-ring cord, and molded in place gaskets for aeronautical and aerospace applications without complete consideration of the end use prior to the selection of this material.
Standard

Fluorosilicone (FVMQ) Rubber Fuel and Oil Resistant 35 – 45

2016-04-19
CURRENT
AMS3328C
This specification covers a fluorosilicone (FVMQ) rubber in the form of sheet, strip, tubing, extrusions, and molded shapes. This specification is not recommended for use in the manufacture of O-rings, O-ring Cord, or Molded in Place gaskets. For the manufacture of O-rings, O-ring Cord, or Molded in Place gasketsthe use of AMS-R-25988, Type I, Class 1, Grade 40 is recommended.
Standard

Designing with Elastomers for use at Low Temperatures, Near or Below Glass Transition

2016-01-15
CURRENT
AIR1387D
To ensure success in design of elastomeric parts for use at low temperature, the design engineer must understand the peculiar properties of rubber materials at these temperatures. There are no static applications of rubber. The Gaussian theory of rubber elasticity demonstrates that the elastic characteristic of rubber is due to approximately 15% internal energy and the balance, 85%, is entropy change. In other words, when an elastomer is deformed, the elastomer chain network is forced to rearrange its configuration thereby storing energy through entropy change. Thermodynamically, this means that rubber elasticity is time and temperature dependent (Reference 25). The purpose of this report is to provide guidance on low temperature properties of rubber with the terminology, test methods, and mathematical models applicable to rubber, and to present some practical experience.
Standard

Designing with Elastomers for Use at Low Temperatures, Near or Below Glass Transition

2003-12-30
HISTORICAL
AIR1387C
To ensure success in design of elastomeric parts for use at low temperature, the design engineer must understand the peculiar properties of rubber materials at these temperatures. There are no static applications of rubber. The Gaussian theory of rubber elasticity demonstrates that the elastic characteristic of rubber is due to approximately 15% internal energy and the balance, 85%, is entropy change. In other words, when an elastomer is deformed, the elastomer chain network is forced to rearrange its configuration thereby storing energy through entropy change. Thermodynamically, this means that rubber elasticity is time and temperature dependent (Reference 25). The purpose of this report is to provide guidance on low temperature properties of rubber with the terminology, test methods, and mathematical models applicable to rubber, and to present some practical experience.
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