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Elastomer: Fluorocarbon (FKM) Aircraft Engine Oil, Fuel and Hydraulic Fluid Resistant Low Temperature Sealing Tg -40 °F (-40 °C) / 70 to 80 Hardness, for Products in Aircraft Engine Oil, Fuel, and Hydraulics Systems

2023-03-20
CURRENT
AMS3353A
This specification covers a fluorocarbon elastomer that can be used to manufacture product in the form of sheet, strip, tubing, extrusions, and molded shapes. For molded rings, molded compression seals, and molded-in-place gaskets for aeronautical and aerospace applications, use the AMS7379 specification.
Standard

Fluorocarbon Elastomer (FKM) High Temperature/HTS Oil Resistant/Fuel Resistant Low Compression Set/70 to 80 Hardness, Low Temperature Tg -22 °F (-30 °C), for Seals in Oil/Fuel/Specific Hydraulic Systems

2022-09-08
CURRENT
AMS7287A
This specification covers a high temperature, compression set, and fluid resistant fluorocarbon (FKM) elastomer in the form of molded O-rings, molded compression seals, molded O-ring cord, and molded-in-place gaskets for aeronautical and aerospace applications. For sheet, strip, tubing, extrusions, and molded shapes, use the AMS3384 specification.
Standard

Packaging and Identification of Molded Elastomeric Seals and Sealing Components

2022-05-20
CURRENT
AMS2817G
This specification covers procedures which will provide protection of elastomeric seals and seal assemblies such as O-rings, cap seal assemblies, and other designs from contamination by foreign materials and handling / transportation / storage damage prior to installation and ensure positive identification by part number of each piece until it is installed.
Standard

Rubber: Fluorocarbon Elastomer (FKM) Aircraft Engine Oil, Fuel and Hydraulic Fluid Resistant 70 to 80 Shore Type A Hardness Low Temperature Sealing Tg -47 °F (-43.9 °C) for Elastomeric Seals in Aircraft Engine, Fuel and Hydraulic Systems

2021-10-06
CURRENT
AMS7410
This specification covers high temperature, compression set, and fluid resistant fluorocarbon (FKM) elastomer in the form of molded rings, compression seals, O-ring cord, and molded-in-place gaskets for aeronautical and aerospace applications.
Standard

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

2020-11-12
WIP
AIR1387E

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

Rubber: Fluorocarbon Elastomer (FKM) Low Temperature Sealing Tg -40 °F (-40 °C) 70 to 80 Type ‘A’ Hardness For Elastomeric Seals in Aircraft Engine Oil, Fuel and Hydraulics Systems

2020-05-18
CURRENT
AMS7379A
This specification covers a fluorocarbon (FKM) rubber in the form of O-rings, compression seals, O-ring cord, and molded-in-place gaskets for aeronautical and aerospace applications. For sheet, strip, tubing, extrusions, and molded shapes use the AMS3353 specification which is intended for that use.
Standard

Elastomer: Methyl/Methyl Vinyl Silicone, (MQ/MVQ) High Temperature/Gas Turbine Engine Oil/Phosphate Esther Hydraulic Fluid Resistant High Strength/High Tear/High Modulus 55 to 65 Type “A” Hardness For Products in High Temperature Environments/Gas Turbine Engine Oils

2019-11-26
CURRENT
AMS3306D
This specification covers a methyl or methyl vinyl silicone rubber material 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.
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