This waterproof seal for avionics control box is made of premium liquid silicone rubber by Xiangchu. It provides excellent waterproof sealing performance, resists high and low temperature and aging, fits well, meets the sealing protection requirements of avionics control boxes, works stably in complex environments, and supports custom specifications.
Material
Industrial LSR
Hardness
Shore A 30-60
Temperature
Certifications
Applications
-40°C ~ +180°C
Colors
Black, White, Transparent, Customizable
# Liquid Silicone Waterproof Seal For Avionics Control Box
*Manufactured by 橡楚（湖北）橡胶有限公司*
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Our Liquid Silicone Waterproof Seal for Avionics Control Boxes is a custom-molded precision sealing component engineered specifically for the demanding environmental requirements of aerospace and aviation electronic systems. Injection-molded from high-purity liquid silicone rubber (LSR) at our production facility in 湖北省鄂州市鄂城区经济开发区凡口街道内河巷54号, this seal provides consistent, long-lasting waterproof protection, chemical resistance, and mechanical stability for avionics enclosures operating in extreme altitude, temperature, and moisture conditions.
As a specialized manufacturer of Liquid Silicone Rubber (LSR) products, 橡楚（湖北）橡胶有限公司 designs these seals to address the core failure points of avionics control boxes: water ingress that damages sensitive circuit boards, seal degradation from rapid temperature fluctuations, and performance loss after prolonged vibration exposure. Unlike general-purpose rubber seals, our LSR waterproof seal retains its elasticity and sealing force across the full range of operating conditions encountered in commercial, general aviation, and unmanned aerial vehicle (UAV) applications.
Our avionics waterproof seals are manufactured from 100% medical-grade platinum-cured liquid silicone rubber, with no added plasticizers or low-molecular-weight contaminants that could leach and damage sensitive avionics electronics. Key material properties are listed below:
All performance parameters are tested under standard laboratory conditions (23°C, 50% relative humidity) to ensure consistency for avionics applications:
Our seals are manufactured via precision liquid injection molding (LIM) to ensure tight dimensional tolerances and consistent material distribution:
Our liquid silicone material inherently repels water and resists moisture absorption, maintaining a consistent sealing compression even after prolonged exposure to high humidity, rain, or condensate formation at high altitudes. Unlike organic rubber seals that swell or degrade with repeated water exposure, our LSR seals retain their original dimensions and sealing force for the entire service life of the avionics control box, preventing costly water-induced equipment failure.
Avionics systems experience rapid temperature swings from cold high-altitude cruise to warm ground operation, and many conventional seals crack or lose elasticity under these conditions. Our LSR seals retain their flexibility at temperatures as low as -55°C (common at cruising altitudes for commercial aircraft) and resist hardening or deformation at up to 200°C, making them suitable for avionics boxes located near engine compartments or heat-generating power electronics.
Platinum-cured LSR produces far fewer volatile emissions compared to peroxide-cured silicone or general rubber materials. Low outgassing prevents contamination of optical sensors, connector pins, and circuit boards inside the sealed control box, eliminating the risk of signal interference or short circuits caused by condensed volatile compounds in enclosed avionics enclosures.
Aircraft and UAV systems are subject to continuous vibration during operation, which causes many seals to experience fatigue cracking or gradual compression set over time. Our LSR material has excellent dynamic fatigue resistance, retaining its compression recovery and sealing performance after millions of vibration cycles, ensuring consistent sealing performance throughout the service life of the avionics system.
As a direct LSR manufacturer, we produce custom-molded seals to match any avionics control box size, profile, and geometry requirement. Whether you need a simple circular O-ring profile, complex irregular shape, or integrated mounting tabs for installation, our precision injection molding process can produce consistent, high-quality seals to match your exact design specifications.
Our Liquid Silicone Waterproof Seals for Avionics Control Boxes are designed for a wide range of aviation and aerospace applications, including:
In all these applications, the seal is installed between the avionics control box base and cover, creating a continuous waterproof barrier that prevents water, dust, and condensate from entering the enclosure while allowing for routine maintenance access when required.
Select the appropriate seal hardness based on your enclosure design and compression requirement:
All of our avionics control box seals are custom-manufactured to match your enclosure's exact groove dimensions and profile geometry. We do not maintain a standard stock size, as avionics enclosures are almost always custom-designed for specific applications. Please provide your 2D or 3D design drawings when placing an order, and our engineering team will produce a prototype and production parts matched to your requirements.
We offer two standard material grades for avionics applications:
At 橡楚（湖北）橡胶有限公司, we operate our quality management system in full compliance with ISO 9001 standards, with rigorous quality control checks at every stage of production, from raw material incoming inspection to final dimensional and performance testing of finished seals. Our quality control processes include:
Our production facility is located at 湖北省鄂州市鄂城区经济开发区凡口街道内河巷54号. For technical inquiries, custom design support, or quotation requests, please contact us at:
