The influence of sealing ring hardness on sealing relationship

1、 Definition and testing method of sealing ring hardness

The hardness of the sealing ring refers to the resistance of the sealing ring material to compression deformation, and is usually tested using the Du hardness.

 

2、 The influence of sealing ring hardness on sealing relationship

The hardness of the sealing ring is closely related to the sealing relationship, which can be explained by the following aspects:

1）. Low hardness

When the hardness of the sealing ring is too low, it can lead to insufficient compression deformation of the sealing ring, resulting in leakage. Therefore, when selecting sealing ring materials, attention should be paid to their hardness range to ensure sealing effectiveness.

2）. Excessive hardness

When the hardness of the sealing ring is too high, its elastic deformation ability is poor, making it difficult to adapt to the small deformation of the sealing surface, resulting in a decrease in sealing effectiveness and leakage.

 

3、 Selection of appropriate sealing ring hardness

To ensure the sealing effect, it is necessary to choose the appropriate hardness of the sealing ring. The specific methods are as follows:

1）. Choose the appropriate hardness range based on the sealing environment temperature, pressure, medium, and other conditions.

2）. Implement ISO standards, prioritize selecting qualified sealing ring suppliers, and confirm that the products meet the quality requirements and technical parameters.

3）.During the manufacturing process, strict quality control is required to ensure that the hardness of each sealing ring meets the standard requirements.