Factors Affecting the Insulation Performance of Plastic Waterproof Connectors

Plastic Waterproof Connectors

Plastic waterproof connectors are electronic components used for signal transmission, power supply, and control in various applications. The insulation material plays a crucial role in the performance and safety of these connectors. Factors such as material selection, manufacturing process, and environmental conditions can affect the insulation performance, leading to decreased insulation resistance, malfunctions, or even safety hazards. In this blog post, we will explore the key factors that influence the insulation performance of plastic waterproof connectors.

Factors Influencing Insulation Performance:

Material and Manufacturing Process:

The insulation material of connectors is typically made of high-polymer polymers. When selecting insulation materials, it is important to choose those with higher dielectric strength, as higher dielectric strength indicates better insulation quality. Additionally, the manufacturing process and quality control are equally important. Poor manufacturing processes can introduce impurities, resulting in bubbles or voids in the insulation material. The presence of impurities reduces the insulation performance, while bubbles or voids decrease the effective thickness of the dielectric, lowering the voltage withstand capability and potentially causing insulation breakdown.

Environmental Conditions:

Environmental factors, including temperature, humidity, and air pressure, significantly influence the insulation performance of waterproof connectors. Among these factors, temperature has the most pronounced effect. Materials used in the connectors undergo changes in their insulation properties under environmental temperature stress, especially above 50°C. Under the influence of environmental temperature stress, insulation materials can undergo thermal degradation and cross-linking reactions, leading to a decrease in insulation resistance. Excessive leakage current generated by the connectors can accelerate this change and result in insulation failure.

Case Study: BD Series Aviation Plug by Shine Industry Electric

Shine Industry Electric’s newly launched BD Series Aviation Plug showcases exceptional insulation performance. The plug features a high-performance outdoor engineering plastic material for its insulation component, which offers crack resistance, impact resistance, and excellent dielectric strength even in high-temperature and high-humidity conditions. The material exhibits good formability, and Shine Industry Electric employs precise injection molding equipment and optimized injection molding processes to ensure defect-free production without bubbles or other imperfections. Furthermore, the internal structure of the industrial connector is designed for optimized heat dissipation.

The BD Series Aviation Plug by Shine Industry Electric demonstrates outstanding insulation performance. It remains unaffected and fully functional within a temperature range of -25°C to 85°C (plastic version) or -40°C to 85°C (metal version).


The insulation performance of plastic waterproof connectors is influenced by various factors. Material selection, manufacturing processes, and environmental conditions play critical roles in maintaining optimal insulation resistance and ensuring safe and reliable operation. Shine Industry Electric’s BD Series Aviation Plug stands out as a top choice, featuring high-performance insulation materials, meticulous manufacturing processes, and excellent thermal characteristics. This award-winning product meets the stringent requirements of high-reliability connectivity in industrial and outdoor environments.

By effectively addressing the factors affecting insulation performance, Shine Industry Electric has delivered a connector solution that ensures reliable and secure connections in challenging applications.

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