Linde Polymer Tec Co.,Ltd. is one of the most experienced manufacturers and suppliers of auto engine parts skeleton oil seal ring in China, also supports customized service. Please feel free to buy high quality auto engine parts skeleton oil seal ring for sale here from our factory.
Products Description
Auto engine parts skeleton oil seal ring is a sealing component used in automobile engines. This oil seal is usually composed of a metal skeleton and an elastic sealing lip, and its main function is to prevent lubricating oil from leaking from inside the engine and to block external contaminants from entering the engine system.
Function of Skeleton Oil Seal Ring
- Oil sealing: Isolate the parts of the transmission system that need lubrication from the output parts to prevent the lubricating oil from leaking from the inside of the machine to the outside.
- Dustproof: Prevent external dust and dirt from entering the machine, protect internal parts from pollution and wear, and maintain the normal operation of the equipment.
Structural composition and classification
1. Structural Composition
Rubber seal body: usually made of high-quality NBR and other materials, with good elasticity and wear resistance, can fit closely to the shaft surface and play a sealing role.
Metal skeleton: like the steel bars in concrete components, it plays a supporting and reinforcing role, so that the oil seal can maintain its shape and tension, ensuring that it does not deform during operation.
Self-tightening coil spring: increases the pressing force of the sealing lip on the shaft, so that the oil seal can maintain effective sealing under different working conditions and adapt to various temperature and pressure changes.
| NBR 70 | Test Method | Norm | Test Values |
| Hardness | ISO 868 SB | 70 ± 5 IRHD | |
| Specific Weight | ISO 2781 | 1.28 | |
| Tensile Strength at break | ISO 37 | 13 N/mm2 | |
| Elongation at break | ISO 37 | 300% | |
|
Compression Set 70h/23°C 48h/70°C 48h/110°C |
ISO 815 A
|
20% 15% 20% |
|
|
Heat Ageing 48h/110°C Hardness Change |
ISO 188
|
+8% |
|
|
Immersion in FAM DIN 51604 2/B 48h/23°C Hardness Change Volume Change |
ISO 1817
|
-16% +35% |
|
|
Immersion in Diesel, 48h/23°C Hardness Change Volume Change |
ISO 1817
|
-1% +2% |
|
|
Immersion in Biodiesel DIN 51606 48h/23°C Hardness Change Volume Change |
ISO 1817
|
-2% +2% |
2. Classification
Classification by lip shape:
Single lip skeleton oil seal: There is only one sealing lip, the structure is relatively simple, and it is suitable for some occasions where the sealing requirements are not particularly high.
Double lip skeleton oil seal: In addition to the main sealing lip, there is also a secondary lip to prevent dust, impurities, etc. from entering the machine, and protect the function of the sealing lip.
Classification by skeleton type:
Inner skeleton oil seal: The skeleton is completely wrapped inside by rubber, and the skeleton is not visible in appearance. The overall smoothness is relatively low, and the requirements for matching holes during installation are relatively low.
Exposed skeleton oil seal: Part of the skeleton is exposed to the outside. This design performs better under harsh working conditions such as high pressure and high temperature.
Classification by working conditions:
Rotary skeleton oil seal: It is used for sealing rotating shafts, such as automobile engine crankshafts, gearboxes, etc. It can withstand the centrifugal force and friction caused by high-speed rotation and maintain stable sealing performance.
Reciprocating skeleton oil seal: It is suitable for reciprocating shafts, such as hydraulic cylinders, cylinders, etc. The design of its sealing lip can adapt to the reciprocating motion of the shaft to prevent the medium from leaking during the reciprocating process.
Application
Widely used in various parts of automobiles, such as:
- Gasoline engine crankshaft,
- Diesel engine crankshaft,
- Gearbox,
- Differential,
- Shock absorber,
- Engine,
- Axle, etc.
It is an indispensable sealing element in key components such as automobile engines and plays an important role in ensuring the normal operation and performance of automobiles.
about Us
Linde Polymer Tec Co., Ltd. mainly produces a variety of rubber compounds and rubber seals and currently has more than 3,000 material formulas and more than 2,000 product specifications. Products are suitable for automotive, aviation, machinery, petrochemical, medical, food, electronics, military, industrial, and other fields. Since the establishment of the factory, the company has completed the process consistency operation, and the product yield rate has reached 97.1%.
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