Custom O rings
Custom O-rings for automobile bearing seals are sealing elements designed specifically for automobile bearings to ensure the sealing performance of bearings under various working conditions and extend their service life.
Definition
O-rings are a type of rubber sealing ring with a circular cross section, which are widely used for sealing in various mechanical equipment.
Customized O-rings are designed according to specific needs to meet the sealing requirements of specific applications.
Scope of application
Automobile bearings: used to seal bearings of key components such as automobile engines, transmissions, differentials, etc.
Other rotating parts: such as automobile water pumps, oil pumps, fans, etc.
Advantages
Sealing performance: effectively prevent lubricating oil leakage and external contaminants from entering the bearings, protecting the bearings from wear.
Durability: Made of high-performance rubber materials, it has excellent oil resistance, temperature resistance, and chemical corrosion resistance.
Reliability: Standardized design, easy installation and replacement, ensuring the long-term stability of the sealing system.
Sealing principle
The O-ring works on the principle of extrusion sealing. The system pressure acts on the O-ring, making its shape similar to that of a liquid with high surface tension, achieving equal pressure transmission and sealing effect.
Design elements
Groove design: The size and finish of the groove are crucial to the sealing effect. It is necessary to select the appropriate groove size according to the size and material of the O-ring.
Compression rate: The compression rate of static sealing O-rings is generally 15-25%, 10-12% for dynamic sealing, and 3-5% for rotational motion.
Material properties
Select materials suitable for the automotive bearing environment, such as oil-resistant, high and low temperature-resistant, and chemically resistant materials to ensure the long-term performance of the O-ring in harsh environments. Different materials have different properties, such as oil resistance, acid and alkali resistance, wear resistance, and chemical erosion resistance.
Common materials include nitrile rubber (NBR), fluororubber (FKM), ethylene propylene rubber (EPDM), etc.
| Physical properties | Rating (metric) | Rating(imperial) |
| proportion | 1.07g/cc | 1.07g/cc |
| Mechanical behavior | Rating (metric) | Rating(imperial) |
| Shore hardness (Shore A) | 40 | 40 |
| Tensile strength (yield) | 9.00 MPa | 1310 psi |
| Elongation length (breaking) | 500% | 500% |
| Tear strength | 19.0kN/m | 108pli |
| permanent compression | 40% | 40% |
| @Temperature 70.0 C, Time 79200 sec | @Temperature 158℉, Time 22.0 hours | |
| Thermal properties | Fixed value (metric) | Rating(imperial) |
| Maximum operating temperature, Air | 110°C | 230℉ |
| Minimum operating temperature, Air | -40.0°C | -40℉ |
| Material description | ||
| color | Black | |
| This data is obtained from the manufacturer of the material. Linde Polymer does its best to ensure the accuracy of this data, but does not assume any responsibility for these data values and strongly recommends that the final data will be provided by our laboratory for reference during the order discussion stage. | ||
Representation method
The representation method of O-rings usually includes inner diameter, wire diameter, rubber type, and standard number. For example, O-ring 20×2.4-NBR means an inner diameter of 20 mm, a wire diameter of 2.4 mm, and is made of nitrile rubber.
Application
Used in key components such as engines, transmissions, and differentials to prevent lubricant leakage and external contaminants from entering, thereby improving the reliability and life of the system.
Customized automotive bearing sealing O-rings ensure efficient operation and long-term stability of automotive bearings under various working conditions through their excellent sealing performance and material properties.
Sealing principle
O-rings work on the principle of extrusion sealing. When system pressure acts on the O-ring, its shape is similar to that of a liquid with high surface tension, and the pressure is transmitted equally in all directions. The initial compression of the O-ring determines its initial sealing ability, and the sealing force of the O-ring increases under the action of system pressure.
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