| Material Property |
ASTM Standard |
Test Requirements |
Polychloroprene |
| 50 Duro |
60 Duro |
70 Duro |
Units |
| Physical Properties |
D2240 D412 |
Hardness |
50 ± 5 |
60 ± 5 |
70 ± 5 |
Shore Pt |
| **Min tensile strength |
2250 (15.5) |
2250 (15.5) |
2250 (15.5) |
psi (MPa) |
| Min ultimate elongation |
400 |
350 |
300 |
% |
| Heat Resistance |
D573 @ *speed temp. |
Specified temp of test |
212 (100) |
212 (100) |
212 (100) |
°F (°C) |
| Aging time |
70 |
70 |
70 |
Hours |
| Max change in Durometer Hardness |
+15 |
+15 |
+15 |
*Shore pt |
| Max change in tensile strength |
-15 |
-15 |
-15 |
% |
| Max change in ultimate elongation |
-40 |
-40 |
-40 |
% |
| Impression Act |
D395 Method B @ *speed temp. |
*specified temp of test (°) |
212 (100) |
212 (100) |
212 (100) |
°F (°C) |
| Max permissible test(after 22 hours) |
35 |
35 |
35 |
% |
| Bar Resistance |
D624 |
Min lbs./in. (Die C) |
180 |
180 |
180 |
lbs./in. |
| Brittleness |
D2137 |
***Low temp brittleness @ -40°F (-40°C) |
Pass |
Pass |
Pass |
|
| Ozone Resistance |
D1149 |
Partial Pressure of ozone during test |
50 |
50 |
50 |
MPa |
| Duration of test. Tested @ 20% strain |
100 |
100 |
100 |
Hours |
| 100°F±2°F (37.7°C±1°C) Mounting
Procedure |
No Cracks |
No Cracks |
No Cracks |
|