NBR Molded Rubber Parts High Temperature Resistance , Auto Rubber Parts 70
Mold rubber parts are flexible rubber seals that stretch-fit onto the shaft and rotate with the shaft against a counter face. They are specifically designed to protect the primary seal from contaminants. These seals are not designed to seal pressure differentials or to seal against fluid levels; they are primarily for contamination exclusion. The seal design utilizes centrifugal force to prevent intrusion of contaminants into the bearing chamber.
Advantage: excellent resistant to gasoline and Fat hydrocarbon oil, second only to TR, ACM and FKM, better than other general rubber. Good heat resistance, good air tightness, abrasion resistance and water resistance, strong cohesive force.
Disadvantage: poor cold resistance and ozone resistance, low strength and bad flexibility, poor acid resistance, bad electrical insulation and polar solvents resistance.
Operating Temperature: about -40°C~+100°C.
Application: mainly used in manufacturing all kinds of oil-resistant products, such as rubber hoses and seals, etc.
| NBR 70 TEST REPORT ASTM D2000 M2BG 714 B14 EO14 EF11 EF21 EA14 F17 |
| PROPERITIES | SPECIFICATION | TEST RESULT | TEST METHOD |
| Hardness shore A | 70±5 | 72 | D2240 |
| Tensile MPA Min | 14 | 14.5 | D12 |
| Elongation % Min | 250 | 315 | D412 |
| Gravity | | 1.263 | D297 |
| Heat resistant 70h 100℃ Hardness change | ±15 | +5 | D573 |
| Tensile strength% | ±30 | +15 | |
| Elongation Max | -50 | -12 | |
| Compression Max 22h at 100℃ | 25 | 14 | D395 |
| NO1 oil resistant | | | |
| Change in hardness | -10~+5 | +1 | D471 |
| Change in tensile Max | -25 | -16 | |
| Change in Elongation | -45 | -20 | |
| Change in Volume% | 0~25 | +6 | |
| Fuel resistant 70 H at 23℃ | | | |
| Hardness change | ±10 | +3 | D471 |
| Tensile change Max | -25 | -8 | |
| Elongation change Max | -25 | -10 | |
| Change in Volume | -5~+10 | +3 | |
| Water Resistant | | | D417 |
| Change in Hardness | | +3 | |
| Change in tensile | | +5 | |
| Change in Elongation | | -14 | |
| Change in Volume | ±15 | +3 | |
| Low Temperature resistant | | | D2137 |
| 3 MIN -40℃ | Non brittle | Pass | D2137 |
Item Images:
Part Name: Molded Rubber Parts Material: NBR 70 A
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NBR Molded Rubber Parts High Temperature Resistance , Auto Rubber Parts 70 Images
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