This optically clear, two-part platinum silicone is designed for applications where light transmission and long-term clarity are non-negotiable. Using an advanced addition-cure chemistry, it cures into a water-white elastomer with exceptionally low haze and no yellowing, making it the material of choice for LED lighting optics, display encapsulation, high-end decorative castings, and transparent architectural elements.
The uncured liquid exhibits a low viscosity and self-deaerating behavior, allowing it to flow into complex cavity geometries and release entrapped air without the need for vacuum degassing. Its gel time can be tuned from several minutes to over an hour, providing flexibility for both manual bench-top casting and automated dispensing lines. Curing occurs at room temperature or rapidly at elevated temperatures, and the cured part reaches full optical and mechanical properties within a standard production cycle.
Once cured, this silicone provides a refractive index around 1.41 and transmits more than 92% of visible light across a thickness of 10 mm, with minimal scattering. It retains these optical properties after prolonged exposure to UV radiation, heat aging up to 200°C, and humidity cycling. Unlike epoxy or polyurethane encapsulants, it does not shrink or crack during thermal stress, and its low Shore A hardness (typically 25–40) protects delicate electronic components from mechanical shock.
The platinum cure system ensures that no corrosive or oxidative residues remain in the material after vulcanization, making it safe for direct contact with sensitive electronic circuitry and LED chips. The cured rubber is also inherently flame retardant to UL 94 HB or V-0 standards depending on formulation, broadening its use in electrical and architectural applications. From flexible light guides, illuminated signage, and optical lenses to artistic water-clear castings and resin art, this crystal clear platinum silicone enables designers and engineers to combine optical performance with the practical benefits of silicone—thermal stability, flexibility, and long service life.
