The buried light of the nominal IP67 is still leaking? It may be these catastrophes!

Many people might wonder why some buried IP67-rated lights still leak water despite having passed certification tests, even from reputable international brands. This can be confusing since these products often come with official IP67 test reports. Take a look at this image to see an example of a seemingly well-sealed buried light that eventually developed leaks. So, why do IP67-rated buried lights sometimes fail? To understand the causes, we need to first clarify what IP67 actually means. If you're unsure, you can refer to articles like "Landscape Lighting: Types of Underwater Lights and Their Applications" or "iPhone 7 is IP67, What Does IPXX Mean?" These resources explain the different levels of fixture waterproofing. The primary reasons for leaks in buried lights can be summarized as follows: 1. Poor design 2. Material defects 3. Manufacturing flaws 4. Installation issues Let’s delve into each of these factors: ### 1. Unreasonable Design For instance, some lights are sealed with adhesive. Initially, when they leave the factory, these lamps may meet the required waterproof standards and appear to function flawlessly. However, over time, especially in outdoor conditions, the adhesive tends to degrade, turning yellow and losing its effectiveness. This exposes the lamp to moisture ingress after about six months of use. As a result, relying solely on adhesive for waterproofing isn’t reliable. Instead, the structural design plays a crucial role. As Mr. Xu mentioned, "If the product's design is flawed, it shouldn't be considered a qualified product." Moreover, some manufacturers don't secure the lens cover tightly enough. Given that buried lights are frequently exposed to water erosion, improper sealing can easily lead to leaks. In this image, you can see how a large luminaire is secured with only three screws, and the spacing between them is quite wide. Can you imagine this setup providing a tight seal? ### 2. Material Defects The materials used in the construction of the lights also play a critical role. Cheaper materials may not withstand prolonged exposure to moisture, UV rays, or temperature fluctuations. Over time, these materials can crack or warp, leading to leaks. ### 3. Manufacturing Flaws Even with good design and quality materials, manufacturing processes can introduce vulnerabilities. Inadequate assembly, poor welding, or substandard sealing techniques can compromise the waterproof integrity of the lights. For example, if the seals around the electrical components are not installed correctly, water can seep in. ### 4. Installation Issues Improper installation can also contribute to leaks. If the lights are not installed according to the manufacturer's instructions, or if the surrounding environment isn't properly prepared (such as ensuring proper drainage), leaks can occur. Additionally, using the wrong type of mounting brackets or connectors can compromise the seal. ### Conclusion To ensure that your buried lights remain watertight, it's essential to pay attention to all these factors. A combination of robust design, high-quality materials, meticulous manufacturing, and correct installation is necessary to prevent leaks. Always choose reputable brands and consult with professionals to avoid costly mistakes. Remember, the best waterproofing solution lies in the design and execution, not just in the initial test results.

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