Can 3C electronic products achieve IP68 waterproof level through liquid silicone encapsulation process?

Firstly, let’s understand the meaning of IP68 waterproof grade. IP68 is the highest level of dust and water resistance in the GB/T 4208-2017 Housing Protection Level (IP Code) standard. Among them, “IP” represents the degree of protection (Ingress Protection), “6” represents complete prevention of dust entry, and “8” indicates that the equipment can still maintain its normal function after being immersed in water under the specified pressure and time. In short, equipment that meets the IP68 waterproof rating can operate for long periods of time in deep water without being damaged.

Liquid silicone (LSR) is very suitable for improving the waterproof performance of electronic devices due to its excellent elasticity, sealing performance, and chemical stability. Here are some key points:

Material characteristics: Liquid silicone has good resilience and softness, and can still maintain a certain degree of flexibility after curing, which helps to form an effective seal.

Sealing effect: Under appropriate molding conditions, liquid silicone can fill seams and irregular surfaces, and tightly adhere to the substrate to achieve good sealing effect.

Chemical resistance: Silicone rubber has good resistance to various chemicals and is not prone to aging or degradation during long-term use.


Wide temperature range: Silicone rubber can adapt to a wide range of temperature changes without losing its physical properties or adhesion.

Design considerations: In order to achieve a waterproof rating of IP68, all possible water infiltration paths need to be considered in product design, and ensure that these areas can be sealed with liquid silicone encapsulation.
Production process control: Strict control of process parameters (such as temperature, pressure, etc.) is required during the production process to ensure consistency and reliability of product quality.
Quality inspection: After packaging, electronic products should undergo strict testing to ensure that they meet the required protection level requirements

In practical applications, the liquid silicone encapsulation process has been widely used in the waterproofing treatment of various 3C electronic products. For example, devices such as smartphones, smartwatches, and headphones all use liquid silicone encapsulation technology to improve their waterproof performance. These devices can maintain normal operation in humid environments such as swimming, bathing, and rain, providing consumers with a more convenient and comfortable user experience.
In summary, the liquid silicone encapsulation process is an advanced packaging technology that can enable 3C electronic products to achieve IP68 waterproof level. Through precise process control and strict quality inspection, the liquid silicone encapsulation process can provide comprehensive waterproof protection for 3C electronic products.