3M Extreme Sealing Tape 4411B is a black, 1 mm thick, highly conformable, single-side acrylic tape with a high-performance ionomer backing. Specifically designed to give you professional results in outdoor conditions including direct sunlight as well as harsh weather, temperature and humidity -extremes, creating an effective seal over an existing joint, seam, or penetration. An ideal solution for "roof-to-trim" sealing and sealing around roof top mechanical fasteners on commercial vehicles, eliminating the need for large quantities of liquid sealants. It bonds instantly and meets the needs for a wide variety of difficult sealing applications. Features and Benefits A durable and high-performance single side acrylic adhesive tape Sound resistance to common industrial solvents and elevated temperature exposure Tacky adhesive sticks on contact for immediate bond with no drying time. No oozing and no clean up needed 1 mm thick conformable structure Pressure sensitive and abrasion r