Baydur GS-772 is a solid polyurethane system used in the reaction injection molding (RIM) process. The system is supplied as two reactive liquid components. Component A is a polymetric diphenylmethane diisocyanate (PMDI) and component B is a formulated polyol system.

Baydur GS-772 system is used in applications where harsh environmental conditions are encountered, such as pump housings, catch basins, and underground equipment. It is also used as a replacement for cast iron where the application requires weight reduction, improved corrosion resistance, and/or improved abrasion resistance. As with and product, use of the Baydur GS-772 system in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability.