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ASTM Selected Technical Papers
Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospheres: Seventh Volume
By
DD Janoff
DD Janoff
1
Lockheed Engineering and Sciences Company NASA Johnson Space Center
,
Houston, TX
;
symposium chairman and editor
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WT Royals
WT Royals
2
United Technologies-Pratt and Whitney
?
West Palm Beach, FL
;
symposium chairman and editor
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MV Gunaji
MV Gunaji
3
Allied Signal Technical Services Corporation NASA Johnson Space Center White Sands Test Facility
?
Las Cruces, NM
;
symposium chairman and editor
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ISBN-10:
0-8031-2004-4
ISBN:
978-0-8031-2004-4
No. of Pages:
282
Publisher:
ASTM International
Publication date:
1995

A new approach for evaluating elastomeric materials for use in high pressure oxygen has been developed. Because this approach replicates the dynamic forces that occur in pressure systems and subjects a specimen to progressive wear, it allows the user to compare wearability and oxygen sensitivity. This method determines if a candidate material ignites before it mechanically fails and provides a relative wearability ranking for that material.

Existing mechanical impact test methods produce data which is useful in screening various materials for oxygen sensitivity. The pass/fail data produced from these tests do not easily translate into a suitable material selection for a particular oxygen application. This new evaluation technique produces both mechanical wear data in combination with sensitivity data which can easily be applied when selecting elastomeric materials for a particular oxygen application.

An explanation of the process as well as sample data are presented.

1.
Irani
,
R.S.
,
Currie
,
J.L.
,
Wilson
,
N.J.
, and
Sanders
,
J.
Dimensional Changes in Elastomers Under High-Pressure Oxygen
”,
Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospehres: Third Volume
, ASTM STP 986,
Schroll
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, Ed.,
American Society for Testing and Materials
,
Philadelphia
,
1988
.
2.
Flammability, odor, and offgassing Requirements and Test Procedures for Materials in Environments that Support Combustion
, NHB 8060.1C,
National Aeronautics and Space Administration
,
Washington, DC
,
1981
.
3.
Oberg
,
E.
,
Jones
,
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,
Horton
,
H.L.
Machinery's Handbook
, 22nd ed.,
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,
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,
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.
4.
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Gland Design, Elastomeric O-Ring Seals, Static Radial
,
Society of Automotive Engineers
,
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,
1977
.
5.
Aerospace Recommended Practice, ARP 1233,
Gland Design, Elastomeric O-Ring Seals, Dynamic Radial
,
Society of Automotive Engineers
,
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,
1977
.
6.
Aerospace Recommended Practice, ARP 1231,
Gland Design, Elastomeric O-Ring Seals, General Considerations
,
Society of Automotive Engineers
,
Warrendale, PA.
,
1973
.
7.
Aerospace Recommended Practice, ARP 1234A,
Gland Design, Elastomeric O-Ring Seals, Static Axial, Without Back-Up Rings
,
Society of Automotive Engineers
,
Warrendale, PA.
,
1979
.
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Apple Rubber Products
,
Seal Design Catalog
,
Apple Rubber Products
,
Lancaster, NY.
,
1989
.
9.
Parker Seals
,
Parker O-Ring Handbook
,
Parker Seal Group
,
Lexington, KY.
,
1982
.
10.
Bryan
,
C.J.
, “
NASA Mechanical Impact Testing in High-Pressure Oxygen
,”
Flamability and sensitivity of Materials in Oxygen-Enriched Atmospheres
, ASTM STP 812,
Werely
B.L.
, Ed.,
American Society for Testing and Materials
,
1983
.
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