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How to identify the failure of O-rings?


At present, O-rings are suitable for installation on va […]

At present, O-rings are suitable for installation on various mechanical equipment, and play a sealing role in a static or moving state in a specified temperature, pressure, and different liquid and gas media. Various types of seals are widely used in machine tools, ships, automobiles, aerospace equipment, metallurgical machinery, chemical machinery, construction machinery, construction machinery, mining machinery, petroleum machinery, plastic machinery, agricultural machinery, and various instruments and meters. element. Therefore, we have to think: when the O-ring fails, what is the severity of it?


Today I will tell you how to identify the failure of O-ring seals, because this will not only help you find the problem, but also facilitate the corresponding preventive measures in the future, but also help some customers who are engaged in this area of ​​work and sales to produce seals. Provide a little technical advice for business improvement and achieve a win-win situation. There are roughly four reasons:

1. Design error: caused by the designer's insufficient knowledge of the product. For example, the underestimation of the pressure on the seal, the wrong understanding of the contact stress distribution on the sealing surface, the unreasonable design of the groove where the seal is placed, etc.
2. The quality of seals: The production quality of seals is closely related to the reliability of the final product. We should go through many inspections, investigations and product tests during production. During the supply process, the seal manufacturer can also be required to provide a true and accurate inspection report
3. Material selection error: There are several commonly used rubber sealing materials, and their characteristics are different, so their applications are also different, so when choosing materials, we must consider many aspects and learn more about O-rings.
4. Improper use of seals: A good seal, if used improperly, will also cause the entire product to fail, such as incorrect use of lubricating oil.