| Rubber Compound
Specifications |
|
| Black EPDM |
Military Specification
MIL-R-3065C, Mil Std 417, Type R, Class RS, |
|
Grade 720 A, B, C1,
F2, Z1, Z2
and Z3 |
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ASTM Designation- D2000
3BA 720 A14, B13, C12,
F19, Z1, Z2
and Z3 |
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| Black SBR |
Military Specification
MIL-R-3065C, Mil Std 417, Type R, Class RS, |
|
Grade 720 A, B, C1,
F2, Z1, Z2
and Z3 |
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ASTM Designation- D2000
4AA 720 A13, B13, C12,
EA14, F17, Z1
and Z2 |
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| Gray EPDM |
ASTM Designation- D2000
3BA 710 A14, C12, F19,
Z1, Z2, Z3 and
Z4 |
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|
Property |
Test Method |
Black EPDM |
Black SBR |
Gray EPDM |
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| Min. Tensile Strength |
ASTM D-412 |
2000 PSI |
2000 PSI |
1000 PSI |
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| Min. Elongation |
ASTM D-412 |
300% |
300% |
200% |
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| Hardness- |
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| Shore A
Durometer |
ASTM D-412 |
70 +/- 5 |
70 +/- 5 |
70 +/- 5 |
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| Modulus @ |
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| 400%
Elongation |
ASTM D-412 |
900 PSI Min. |
900 PSI Min. |
300 PSI Min. |
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| Heat Resistance |
ASTM D-573 |
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A1470h @ 212
F |
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A1370h @ 158
F |
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Max. Change in Hardness |
+ 10 Pts. |
+ 10 Pts. |
+ 10 Pts. |
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Max. Change in Tensile |
-25% |
-25% |
-25% |
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Max Change in Ult. Elongation |
-25% |
-25% |
-25% |
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| Compression Set |
ASTM D-395 |
25% Max |
25% Max |
50% Max |
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Method B |
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B13 & Z4
22h @158 F |
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| Ozone Resistance |
ASTM D-1171 |
No Cracks |
No Cracks |
No Cracks |
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C12 100 F @
50 pphm |
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| Water Resistance |
ASTM D-471 |
10% Max Swell |
10% Max Swell |
10% Max Swell |
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EA14 70 h @
212 F |
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Z3 166 h @
212 F |
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| Low Temp. Brittleness |
ASTM D-2137 |
Passes |
Passes |
Passes |
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Method A, 9.3.2 |
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F17 Non
brittle after |
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3 min. @
-40 F |
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F19 Non
brittle after |
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3 min. @
-67 F |
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| Load Deflection |
ASTM D-575 |
300 +/- 70 PSI |
300 +/- 70 PSI |
250 +/- 70 PSI |
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Method A |
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Z1 20%
Deflection |
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| Tear Resistance |
ASTM D-624 |
200 PPI Min. |
200 PPI Min. |
150 PPI Min. |
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Z2 Die B |
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