Optical Liquid Silicone Rubber can be classed by the light transmittance rate and the refractive index. Newsil possess three grades of optical liquid silicone rubber:
- Typical RI 1.41 Liquid Silicone Rubber
- Higher RI 1.46 Liquid Silicone Rubber
- High End RI 1.51 Liquid Silicone Rubber for Encapsulation
