GSP 1552-2 is an optically-clear, two-part polyurethane system that cures at room temperature. With a convenient mix ratio (1 to 1 by both weight and volume), its low-viscosity A and B components are easily mixed into a readily pourable material. Once cured, it forms a tough, flexible elastomer, which resists degradation from water and ultra-violet light. This system is ideal for many potting and encapsulating applications where optical clarity is desired, or where UV and weather resistance are needed.