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3.FE251-U resistance to oil and solvents |
| Oil type |
Immersion conditions |
Materials changes |
| Hardness (points ) |
Elongation |
Tensile strength (%) |
Change volume (%) |
| Intital value |
JIS 50 |
395 |
99kgf/cm2 |
------- |
| ASTM No-1 |
150º C/ 7days |
-2 |
-12 |
-3 |
+1 |
| ASTM No-3 |
-4 |
-22 |
-21 |
+5 |
| SAE 5W-30 |
150ºC/ 7days |
-4 |
-13 |
-13 |
+29 |
| Fuel A |
60º C/ 7days |
-8 |
-43 |
-34 |
+17 |
| Fuel B |
-11 |
-45 |
-51 |
+26 |
| Fuel C |
-12 |
-45 |
-51 |
+26 |
| Fasoline |
60º C/ 7days |
-10 |
-45 |
-39 |
+22 |
| Light oil |
-6 |
-8 |
-18 |
+5 |
| Silicone oil KF96 50cSt |
150º C/ 7days |
-1 |
-5 |
-1 |
+0.1 |
4.FE251-U long-term resistance to heart and oils (150ºC) |
| Type of oil |
Property |
Immersion time (hours) |
| Initial value |
25 |
100 |
500 |
750 |
| Silicone Oil KF96 50cSt |
Hardness Jis |
52 |
52 |
52 |
52 |
50 |
| Elongation (%) |
395 |
359 |
358 |
341 |
339 |
| Tensile strength MPa{kgf/cm2} |
9.7 {99} |
8.7 {87} |
8.5 {87} |
8.1 {83} |
8.4 {86} |
| Change in volume (%) |
---------- |
+0.8 |
+0.8 |
+0.4 |
-0.1 |
| ASTM No.s Oil |
Hardness JIS |
52 |
50 |
50 |
48 |
48 |
| Elongation (%) |
395 |
349 |
330 |
303 |
265 |
| Tensile strength MPa{kgf/cm2} |
9.7 {99} |
7.8 {80} |
6.9{70} |
4.0 {41} |
2.5 {26} |
| Change in volume (%) |
--------- |
+4.6 |
+4.6 |
+5.3 |
+2.7 |
5.FE251-U resistance to chemicals |
| Type of chemical |
Immersion conditions |
Changes in material |
| Hardness (points) |
Elongation |
Tensile strength (%) |
Change in volume (%) |
| Initial value |
JIS 52 |
395 |
99kgf.cm2 |
--------- |
| Acetic acid 5% |
25º C/3days |
-6 |
-15 |
-13 |
+13.2 |
| Hydrochloric 5% |
-3 |
-7 |
-11 |
+0.4 |
| Nitric acid 10% |
-4 |
-6 |
-6 |
+6.7 |
| Sulfuric acid 20% |
-1 |
-15 |
-12 |
+0.3 |
| Caustic acid 20% |
-5 |
-6 |
-7 |
+0.1 |
| Ammonia 28% |
+3 |
-18 |
-41 |
+1.6 |
6.Fluorosilicone ruber's low teperature characteristics |
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