With the global energy structure transition, solar energy— 作为 a clean and renewable energy source—is being widely applied in households, industries, and public facilities. In solar thermal systems and photovoltaic (PV) systems, seals are critical components that ensure the efficient operation of equipment. Silicone rubber products, thanks to their unique properties, are gradually becoming the ideal choice for the solar energy industry.

Silicone rubber boasts excellent resistance to high and low temperatures, maintaining stability in environments ranging from -110℃ to 300℃ without aging or failing due to temperature fluctuations. For solar energy equipment that is exposed outdoors for long periods and needs to withstand sunlight, wind, rain, and temperature differences, this represents an irreplaceable advantage. Additionally, silicone rubber exhibits good ozone resistance, UV resistance, and insulating properties, making it more reliable and durable for outdoor applications.

In solar vacuum tube collectors, the sealing quality between tubes and between tubes and water tanks directly determines the operational efficiency of the equipment. Poor sealing can lead to heat loss, water leakage, or even equipment damage. Silicone rubber seals can fit tightly against tube walls and maintain long-term sealing effectiveness, thereby improving heat collection efficiency and extending the service life of the system.

Nanjing Qiniu Technology Development Co., Ltd. has focused on silicone rubber products for over 20 years, with its products widely used in industrial, medical, food, and new energy sectors. In the solar energy industry, we produce 47mm and 58mm solar tube seals, 15mm (4-inch) heat-locking seals, and more. In 2009, our company obtained certification from the China General Certification Center (CGC) and became the second manufacturer in China to receive the title of "Recommended Accessory Supplier for Solar Water Heater Golden Sun Certified Enterprises." Our solar silicone rubber products are made from high-quality silicone rubber materials, featuring high-temperature resistance, aging resistance, and excellent elasticity, which enable them to maintain stable performance during long-term operation. Especially in water heaters and heat collection systems, these seals effectively prevent water leakage and heat loss, helping customers reduce maintenance costs.

Beyond standard-specification products, we also offer customization services tailored to customer needs. From formula development and mold design to finished product testing, every step is strictly implemented in accordance with our quality management system to ensure each product meets international standards. Our seals have passed testing by the SGS authority, complying with the certification requirements of ROHS and REACH regulations, making them environmentally friendly and safe for use.

In the future, as the solar energy industry develops rapidly, the demand for high-quality seals will continue to grow. We will continue to research and develop silicone rubber products with stronger weather resistance and longer service life, providing more reliable solutions for the solar energy industry.

Choosing us means choosing stability and peace of mind. We are willing to cooperate with customers worldwide to jointly promote the development of clean energy.