Ensuring the long-term and reliable performance of outdoor LED neon signs is critically dependent on choosing the appropriate jacket material for outdoor useage. This article compares the two primary options—PVC and Silicone—by evaluating their performance characteristics and providing practical recommendations based on real-world application scenarios.

The most prevalent jacket materials for outdoor LED neon lights fall into two main categories.

This category encompasses various compounds, from standard PVC to more environmentally friendly formulations. For instance, our factory utilizes an eco-friendly PVC variant that is odorless, flexible, and easy to bend.

Materials used specifically for advertising neon signs are typically classified into several types, such as precipitated silicone and fumed silicone.

A clear distinction must be made between laboratory certifications and actual outdoor durability.

Firstly, it is important to note that both eco-friendly PVC and silicone materials can achieve an IP65 rating. Consequently, an IP65 certification theoretically indicates that a material is dust-tight and can withstand low-pressure water jets from any direction. It is suitable for outdoor use.

However, in practical applications, we generally advise against PVC for outdoor signage primarily because of its poor long-term weather resistance. Specifically, exposure to UV rays and extreme temperature fluctuations cause PVC to become brittle and crack, leading to water ingress. Therefore, especially for high-voltage applications, PVC is not recommended for outdoor environments.

For a detailed explanation of why laboratory certifications may not guarantee long-term field performance, please refer to this article. Certification and Reality: There’s Often a Gap Between Them.

In contrast, silicone jackets demonstrate far greater reliability outdoors due to their inherent material stability. Silicone resists cracking and embrittlement from temperature changes, making it ideal for harsh conditions. Furthermore, silicone formulated with UV stabilizers maintains color stability and high light transmittance without yellowing, even under prolonged sunlight.

Of course, the selection of jacket material for outdoor neon signs must also balance performance with economics and market needs. Currently, cost-effective industrial-grade silicone is the market-preferred choice as it offers the best equilibrium between proven weather resistance, extended lifespan, and reasonable cost for neon signs.

In summary, for outdoor LED neon signs where long-term, trouble-free operation is the priority, it is strongly recommended to prioritize REAL silicone jacket materials. This choice is the most effective way to ensure the sign’s ultimate durability and reliability in demanding outdoor environments.

As a professional manufacturer with 8 years of deep expertise in the neon lighting industry, One Zero LED Lighting Factory is committed to providing a full range of high-quality neon lighting products.

• Equipped with 6 specialized production lines and comprehensive in-house capabilities from R&D to manufacturing, we can flexibly meet the needs of diverse projects.
• Maintain substantial ready-to-ship inventory across our entire advertising neon light series, enabling fast dispatch within 3–7 days for small to medium orders. This ensures efficient support for urgent projects and allows your plans to proceed with confidence.

Let’s work together to illuminate spaces, ideas, and opportunities with professional products and service.

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