Master Bond Polymer System EP30D-12 is a uniquely versatile two component elastomer featuring superior strength, toughness and chemical resistance for high performance bonding, sealing, casting, potting and encapsulation applications. It contains the recognized advantageous performance characteristics of epoxy resins such as strength, chemical resistance and adhesive qualities, with those of the polyurethane's including toughness, abrasion resistance and flexibility. Master Bond Polymer System EP30D-12 is formulated to cure at room temperature or more rapidly at elevated temperatures, with a 100 to 20 mix ratio on a weight basis. It is 100% reactive and does not contain any solvents or diluents. The EP30D-12 system cures with minimal shrinkage to a durable high strength and tough elastomer with remarkably good resistance to thermal cycling and chemicals including water, inorganic salts, alkalis and acids as well as many organic chemicals, over the exceptionally wide temperature range of -60°F to more than +250°F. Adhesion to metals, glass, concrete, ceramics, wood, vulcanized rubbers and many plastics is excellent. The cured elastomer is an electrical insulator. Color of part A is amber, part B clear. Master Bond Polymer System EP30D-12 is widely used in the electronic, electrical, computer, construction, metalworking, appliance, automotive and chemical process industries. It is quite safe to use when proper industrial hygiene practices are observed.