factory asphalt pavement crack filling machinery with low- Top quality crack filling machine in road construction ,asphalt crack filling machine CLYG-ZS350,Esun Clyg-zs350 Hot Melt Kettle Bitumen Asphalt Road Crack...Crack routing is the act of machine routing cracks to a uniform width and depth before sealant is poured into the cracks.road crack-seal PU821pu construction adhesive agentCrack Sealing Worker - road-marking-machines.com. A proper crack seal involves more than just filling the crack. The crack should be routed to clean out any existing debris and create a reservoir for the sealant. Contact Supplier