IsoCast URN 4005 is a two-component urethane pore sealer used for rubber granule mats for impermeable sports surfaces such as athletic tracks. The thixotropy and gel time of IsoCast URN 4005 allow for easy application and a strong hold within 2-4 hours. It can also be used for bonding materials such as carpet; wood; foam; metal; and most plastics to one another. IsoCast URN 4005 provides a permanent; flexible bond.