MPP-A15C is a room temperature cure polyurethane casting resin system with a long pot life, which enables easy manual processing at room temperature to make large parts without using an inline dispensing machine. The elongation value of cured material is over 1000% (stretches over 10 times of original shape). Once it cures, it is a hydrophobic material, and it is expected to hold well for wet and humid environments. Possible applications include specialty gaskets, roller cover, mold-making for concrete parts, and many other custom applications.