As a connector, D-SUB connector has a wide range of applications, but due to the limitations of its own structure, D-SUB connector has some problems in waterproof performance. In order to improve the waterproof performance, we need to consider the applicability of the sealing material when selecting the connector.

When selecting the sealing material, the water resistance of the material should be considered first. Since the D-SUB connector needs to be used in a humid environment, it is necessary to select a material with good water resistance. A common sealing material is a rubber sealing ring, which has good sealing performance and water resistance, and can effectively isolate the entry of external moisture.

In addition, the temperature resistance of the sealing material is also an important consideration. The D-SUB connector will generate a certain amount of heat during use, so it is necessary to select a sealing material that can withstand high temperatures. Silicone is a common sealing material with good temperature resistance, which can maintain good elasticity and sealing performance at higher temperatures.

In addition to water resistance and temperature resistance, the mechanical properties of the sealing material are also factors that need to be considered. The D-SUB connector will be subject to vibration and shock during use, so it is necessary to select a sealing material with good mechanical properties. Silicone rubber is a commonly used sealing material with good vibration and shock resistance, which can effectively protect the connector.

In addition to the selection of sealing materials, we can also take other measures to improve the waterproof performance of D-SUB connectors. For example, a waterproof coating can be added to the outer layer of the connector to prevent moisture from penetrating. In addition, sealant can be used for fixing to enhance the sealing performance of the connector. These measures can improve the waterproof performance of D-SUB connectors to a certain extent.

In summary, the selection of suitable sealing materials is the key to improving the waterproof performance of D-SUB connectors. When selecting sealing materials, factors such as water resistance, temperature resistance and mechanical properties need to be considered to ensure that the connector can work normally in a humid environment. In addition, other measures can be taken to further improve the waterproof performance.