DuPontTM FortasunTM

Enhancing the power of solar energy through the chemistry of silicone

DuPont™ Fortasun™ solar silicones drive increased performance in solar modules around the world.

We’ve transformed one of the most abundant elements in nature, silicone, and are successful in addressing critical needs of the global solar industry: reducing costs and increasing durability of photovoltaic modules and concentrators.

Not only do our silicone products bolster solar module and panel manufacturing, but they boast decades of reliability in construction and electronics applications, and have distinct advantages over in-kind competitors.

Long-term elasticity, pliability and flexibility, ultra-transparency, and strong adhesive properties

Resistance to rain, sleet, snow, ultraviolet radiation, and water repellency

Resistance to damage and degradation from high or low temperature extremes, thermal shock, chemicals, delamination, oxidation and corrosion

Resistance to aging - silicones do not harden, crack, peel, crumble, dry-out, rot or become brittle like many organics

Excellent dielectric properties

Global solar demand grows daily.

As part of the requirements to meet growing energy demand, efficient and dependable DuPont™ Fortasun™ adhesives and sealants are proven to endure in the face of extreme climates, ensuring that energy needs are met in all parts of the world.

Materials Matter

DuPont™ Fortasun™ products provide silicone based solutions for commercial and residential solar panels, and deliver more options and stronger solutions for building-integrated photovoltaics. Our Fortasun™ products are available as:

Silicone sealants and adhesives outperform typical PV tapes in frame sealing and rail bonding applications by providing protection from moisture, harsh temperatures, mechanical and thermal shock, as well as vibrations. LEARN MORE

Silicone potting agents possess unique properties and benefits that make them the materials of choice for solar industry applications and offer a unique combination of reliable performance and durability for photovoltaic junction box application and more. LEARN MORE

Silicone encapsulants protect solar components against corrosion and delamination, prolonging life of a module and ensuring better power output and improved performance results in terms of increased power generation. LEARN MORE



DuPont™ Fortasun™ greatly expands manufacturing options and especially applications. For small modules and large solar arrays, silicone materials from DuPont provide lasting benefits in various uses.

Frame Sealant & Adhesive GET INFO


Adhesives and sealants for PV junction box bonding  GET INFO

Silicone rail bonding adhesives technology GET INFO

Electrically-conductive adhesives for modules GET INFO

Silicone-based building integrated photovoltaics solutions (BIPV) GET INFO

Sealing solutions for solar hot water generation systems GET INFO

Eric Wang

“DuPont has been a leading materials supplier to the solar industry for over 40 years.  Our suite of DuPont™ Fortasun™ solar silicones has expanded our product portfolio, providing the same reliability and durability our customers have come to expect..” 

- Eric Wang, Global Business Director, DuPont Photovoltaic and Fluoromaterials


Ethan Simon,

“We have proven silicone materials that provide distinct advantages over organic competitors.  With over 30 years of demonstrated reliability our silicones are specifically made for the solar industry and resist degradation due to UV exposure, temperature extremes, and oxidation.”

- Ethan Simon, Global Technology Leader, DuPont Photovoltaic Solutions