Sealing plugs are usually made of silicone rubber soft gel, and many common items in daily life cannot do without the assistance of silicone sealing plugs. Whether its functionality can meet the sealing performance of the product body and the long-term service life performance depends on whether its quality can meet your usage performance!
The function of silicone sealing plugs mainly includes several sealing forms for mouth sealing, such as conical inner buckle sealing type, outer sleeve buckle sealing type, internal reverse buckle sealing, thread twist sealing, I-shaped concave convex sealing, etc. Each sealing effect depends on the main structure of the product. In addition to the structure, it is necessary to understand several basic points to determine its sealing effect and use digital technology.
1. The material factor plays a significant role. Firstly, the performance of the material affects its tensile rebound deformation rate. Due to different formulations and the formulation of silicone source manufacturers, the properties of the raw materials used are different. Silicone materials also have specific properties, such as which material is suitable for functional seals and which is suitable for appearance parts, which have certain differences. So the selection of materials must have specific formula properties.
Secondly, the hardness of the material is crucial, and different levels of softness and hardness are one of the main issues that lead to the sealing assembly of silicone plugs. For example, 30 degrees and 80 degrees are two different concepts. Their difference lies in the fact that 30 degrees of softness can be used for better airtightness and liquid sealing performance, while 80 degrees of high hardness can better cushion stress performance. Therefore, both types of hardness have their own advantages and are used in different ways for mechanical equipment and household sealing.
2. The softness and hardness caused by processing are different, and sealing plugs can easily lead to two different phenomena during the production process. During the production process, due to the increase in production and the acceleration of vulcanization speed, the product may become soft and partially immature, resulting in assembly softening. Secondly, the processing time is too long and the mold cannot be released in time, resulting in long-term high-temperature curing and brittleness.
3. Whether the structure of the design is reasonable, as silicone belongs to soft colloids, if used for a long time, there is no certain interference difference in the design. Long term friction can easily cause the sealing plug to fall off and loosen. Therefore, in the design, it is necessary to grasp the size of the silicone sealing plug as much as possible, and at the same time adjust the soft hardness with the size. When increasing the hardness, the interference amount needs to be reduced, and when the hardness decreases, the interference amount must be increased to ensure the tightness of the plug.
To ensure the sealing performance of the sealing plug, the above methods can be used as a reference for general methods. However, for some special sealing plugs, it is recommended to adjust them before conducting sample experiments to ensure their safety performance before mass production.
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