Linde Polymer Tec Co.,Ltd. is one of the most experienced manufacturers and suppliers of crankshaft oil seal in China, also supports customized service. Please feel free to buy high quality crankshaft oil seal for sale here from our factory.
Products Description
The crankshaft oil seal is a sealing element installed on the front and rear ends of the engine crankshaft. It is used to prevent lubricating oil from leaking from the front and rear ends of the crankshaft and to prevent external dust and impurities from entering the engine interior. It usually consists of rubber material and metal support parts.
- Sealing function: The main function of the crankshaft oil seal is to ensure the normal operation of the engine's internal lubrication system and prevent lubricating oil leakage. It forms a seal by contacting the crankshaft surface, preventing lubricating oil from leaking from the crankshaft journal.
- Wear resistance: The crankshaft oil seal usually uses wear-resistant rubber materials such as styrene-butadiene rubber (NBR) or fluorine rubber (FKM) to provide long service life.
- Temperature resistance: Crankshaft oil seals need to work in high-temperature environments because the lubricating oil at the crankshaft journal is usually affected by high temperatures. Therefore, the material of the crankshaft oil seal needs to have good temperature resistance to prevent material aging and failure.
- Elasticity and tightness: The crankshaft oil seal needs to have a certain degree of elasticity to adapt to the rotation and deformation of the crankshaft.
- Chemical resistance: Crankshaft oil seals need to resist attack by lubricants and other chemicals. Therefore, it is usually made of rubber material with good chemical resistance.
| Physical properties | ||||
| Property | Test standard | Value | Unit | |
| Hardness | ASTM D2240 | 72＋/-5 | Shore A | |
| Elongation at break | ASTM D412 | 297 | % | |
| Tensile strength | ASTM D412 | 19.1 | Mpa | |
| 100% Modulus | ASTM D412 | 4.6 | Mpa | |
| Compression set-24 hours at 100 ℃ Slab | ASTM D395 | 9.0 | % | |
| Ageing properties | ||||
| Property | Test standard | Value | Unit | |
| Heating ageing-72 hours at 100 ℃ | ASTM D573 | |||
| Hardness change | 1.95 | Shore A | ||
| Elongation at break change | -20 | % | ||
| Tensile strength change | -7 | % | ||
| Volume change | 0 | % | ||
| Aging water-166hours at 100 ℃ | ASTM D471 | |||
| Hardness change | -1.90 | Shore A | ||
| Elongation at break change | -10 | % | ||
| Tensile strength change | -10 | % | ||
| Volume change | 4.36 | % | ||
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