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SealBoss ® 6500 – is a technologically advanced multiple application product. This polyurea is a self leveling, 100% solids, two component, 1:1 ratio, very flexible elastomer. SealBoss ® 6500 – is an excellent joint and crack filler for concrete in applications that are time critical. It works well in adverse temperature conditions as the material cures rapidly in ambient temperatures from -25C to 50C. The tack free time is 5 to 15 minutes. This permits to reopen the jobsite to vehicle and foot traffic just one hour after the application