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Rotating Oil Seal (Oil seal)It is called the seal used in general lubricating oil and is a mechanical element used for sealing oil.Its working environment is worse than that of the general seal. it separates the parts that need lubrication from the output parts in the transmission parts so as not to let the lubricating oil leak.Dongsheng seal tells you that high or low temperature, friction resistance, wear resistance, etc. are all due to the performance of the rubber sealing material used by the oil seal.Therefore, I should consider the sealing performance and service life of this kind of rotating lip oil seal for the application of rubber seal material.
English name: oil seal
Definition: mechanical elements for sealing oil
What is special about the oil seal (oil seal? It is also a rubber fully coated lip oil seal with self-tightening spring called Skeleton oil seal, and an oil seal with iron shell called power Oil Seal. All parts of the running body box that have liquid lubricating oil and are connected to the outside need oil seals. However, some manufacturing materials use rubber and some use metal.
The common materials of Oil Seal are: NBR rubber, fluorine rubber, silicone rubber, acrylic rubber, polyurethane, PTFE, etc. When selecting the material of the oil seal, it is necessary to consider the compatibility of the material to the working medium, the adaptability to the working temperature range and the ability of the lip to follow when the rotation axis rotates at high speed. The temperature of the lip edge of the general Oil Seal is higher than the working medium temperature 20 ~ At 50 °c, attention should be paid when selecting Oil Seal materials. Please refer to: rubber type and properties for details. The working range of the oil seal is related to the material used by the Oil Seal: when the material is rubber (NBR), it is-45 ~ 120 °c, Alec rubber (ACM)-30 ~ 180 ℃, fluorine rubber (FPM)-25 ~ 280 degrees C. The following are the main advantages:
1. The oil seal structure is simple, easy to manufacture and offset.
2. the seal is light in weight and has less consumables.
3. The Oil Seal has small installation position, small axial size, easy processing and compact machine.
4. the sealing function of the oil seal is good and the service life is long.
5. easy disassembly and convenient inspection.
6. cheap materials.