3M™ Vinyl Foam Tape 4508 Black, 0.125 inch (3.0 mm) closed cell vinyl foam with acrylic adhesive. 3M™ Vinyl Foam Tape 4718, acrylic adhesive is protected by a 0.004 inch (0.1 mm) thick white, silicone treated paper liner which allows for die-cutting without having to laminate another liner to the foam. Durable, flexible, weather resistant tapes wh