Sealing Expertise for Solar Energy

Durable: The sealing rings for solar panels are designed for a service life of 30 years.

Sealing Rings: A Safety Issue for Solar Panels

The sealing rings have an important role in solar panels. They prevent the penetration of water and atmospheric humidity, which can cause the systems to short-circuit or even catch fire. But even when the problem is “just“ corrosion, there would be losses in performance that could quickly reduce electrical output and affect costs. The products are generally employed in systems in any climate zone, so the seals are engineered to withstand subzero temperatures as easily as the arid conditions in deserts.

The growing demand for solar energy facilities worldwide suggests how many solar panels and connectors – and thus sealing rings – will be needed in the future. Between 2018 and 2022 in Germany alone, the number of photovoltaic systems on rooftops and on parcels climbed from 1.7 million to 2.2 million, and the total continues to increase. It is a worldwide trend, and Freudenberg Sealing Technologies is supporting it with this new product. “Even as small and nondescript as our seal is, it is a crucial element for the reliable, safe and efficient generation of solar energy,” Schmid said. It is yet another solution from Freudenberg Sealing Technologies to promote the production and storage of renewable energy.

Seals in High Demand for Inverters in Photovoltaic Systems

Another seal from Freudenberg Sealing Technologies is in demand in the solar industry, and it is manufactured at the company’s headquarters in Weinheim, near Heidelberg. These sealing rings also protect equipment from atmospheric humidity. “For this challenging seal, we are using another in-house development, a rubber compound like no other in the market,” Schmid said.