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Acrylonitrile Butadiene (Nbr) Rubber Aromatic Fuel Resistant 65-75

2019-09-29
WIP
AMS3215N
This specification covers a nitrile (NBR) rubber in the form of sheet, strip, tubing, extrusions, and molded shapes. Primarily for parts, such as gaskets, diaphragms, bushings, grommets, and sleeves, requiring resistance to aromatic and aliphatic fuels when continuously or alternately exposed to both.
Standard

Suitable Test Sizes for O-ring Specifications

2019-09-27
WIP
ARP3050A
There are many tests that have been developed to characterize rubber O-rings. Many of these tests are independent of the size of the O-ring being tested. However, there are some tests, specifically, stress/strain properties, that are a function of the O-ring's size. The purpose of this report is to provide guidelines for specifying O-rings that would be considered "suitable for testing " when writing O-ring material specifications.
Standard

Synthetic Rubber, Hot Oil Resistant, High Swell, 45 - 55

2019-07-29
CURRENT
AMS3222J
This specification covers a synthetic rubber in the form of sheet, strip, tubing, extrusions, and molded shapes. This specification should not be used for molded rings, compression seals, O-ring cords, and molded in place gaskets for aeronautical and aerospace applications without complete consideration of the end use prior to the selection this material.
Standard

Rubber, Silicone 1200 psi (8.27 MPa), High Modulus 55 - 65

2019-07-26
WIP
AMS3306D
This specification covers a silicone elastomer in the form of sheet, strip, tubing, extrusions, and molded shapes.<p>These products have been used typically as seals from -65 degrees to +225 degrees C (-85 degrees to +437 degrees F), compounded especially for high strength. Silicone rubber is resistant to deterioration by weathering and by high-aniline-point petroleum-base lubricating oil and phosphate ester hydraulic fluid, and remains flexible over the temperature range noted. This material is not normally suitable for use in contact with hydrocarbon-based fuels and low-aniline-point petroleum-base fluids due to excessive swelling of the elastomer, but usage is not limited to such applications. Each application should be considered individually.
Standard

Oil, Reference, for "L" Stock Rubber Testing

2019-06-13
WIP
AMS3020B
This specification covers a petroleum-base reference oil. This fluid has been typically used as a reference oil to estimate the ability of elastomeric compounds to conform to specified requirements after immersion at a specified temperature for a specified time and temperature as required by the material.
Standard

Rubber: Fluorocarbon Elastomer (FKM) 70 to 80 Hardness, Low Temperature Sealing Tg -50 °F (-46 °C) For Elastomeric Seals in Aircraft Engine Oil, Fuel and Hydraulics Systems

2019-05-21
WIP
AMS7410
1.1 Form This specification covers high temperature, compression set and fluid resistant fluorocarbon elastomer material to be used in the form of O-rings, compression seals, O-ring cord, and molded-in-place gaskets for aeronautical and aerospace applications. 1.2 Application These products have resistance to a variety of gas turbine engine oils, including high thermal stability (HTS) oils, fuels, and hydraulic fluids, but usage is not limited to such applications. Each application should be considered separately. This fluorocarbon (FKM) has a service temperature range of -65 to +400 °F (-54 to +204 °C) in air. 1.3 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.
Standard

Rubber, Silicone 1200 Psi (8.27 Mpa), High Modulus 45-55

2019-05-10
WIP
AMS3347D
This specification covers a silicone rubber in the form of sheet, strip, tubing, extrusions and molded shapes. Primarily for parts required to operate or seal from -75 to +205 degrees C (-103 to +401 degrees F), compounded especially for high strength. Silicone elastomer is resistant to deterioration by weathering and by high-aniline-point-petroleum-base oils and remains flexible over the temperature range noted. These products are not normally suitable for use in contact with gasoline or aromatic fuels and low-aniline-point petroleum-base fluids due to excessive swelling.
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