GSP 1573-1 is a two-part, general purpose polyurethane potting system. The low viscosity A and B components readily mix into an easily pourable potting resin. The system ultimately cures into a translucent blue, moderately soft, flexible elastomer with a hardness of 55–65 Shore A. Fully cured, GSP 1573-1 polymer resists degradation in applications where there is moisture exposure.