Opti-tec 7020 clear silicone potting compound from Intertronics is a two-part clear liquid silicone which will cure at room temperature or can be accelerated at increased temperatures. It features a non-yellowing catalyst system and a low viscosity which allows ease of flow around complex parts, providing electrical insulation and shock protection. When fully cured Opti-tec 7020 exhibits a refractive index of 1,406 and a thermal operating range of -60°C to +200°C.