Sure-Grip 404 is a fiber-free, solvent based, synthetic rubber duct sealant that has passed CDPH in accordance to LEED v4 standards. Its exceptional strength, fast drying time and unmatched flexibility make it ideal for those applications requiring a solvent-based sealant. Sure-Grip’s low-viscosity, no-drip, no-string formulation allows fast application for labor savings and extended coverage for lower installed cost.