Concrete & Asphalt Joint Sealant - SAFE-SEAL 3405 - W. R ...- Longitudianl Joint Asphalt Crack Repair ,SAFE-SEAL 3405 is a high performance, polymer-modified, asphalt emulsion horizontal joint and crack sealant. It is a one-component, self-leveling material that can easily be …Crack Sealing: Asphalt Repair - Asphalt 365Asphalt crack sealing is an inexpensive repair service that can be performed year round. It extends the lifespan of the pavement by preventing additional water erosion that seeps into the asphalt.