3311 is ideal for sealing joints and seams against moisture and vapor on foil jacketing insulation. It can also be used in general maintenance and automotive repair. Product Features:For duct sealing and general repairsAggressive adhesive seals seams and joints for long term durabilityFor long term repairsSoft aluminum foil conforms to irregular surfaces and provides a reliable vapor barrierUL 723 rated for flame and smoke characteristics
