3M(TM) Vinyl Foam Tape 4508 Black, 3/8 in x 36 yd, 24 per case 3M(TM) Vinyl Foam Tape 4508 Black, 0.125 inch (3.0 mm) closed cell vinyl foam with acrylic adhesive. 3M(TM) Vinyl Foam Tape 4508, 0.003 inch (0.08mm) thick white, silicone treated paper liner is applied to the non-adhesive side of the foam so that the PVC can be cut to length and applied while leaving the liner in place. Durable, flexible, weather resistant tapes which can help seal out dust, light, and moisture when placed under 30 percent compression.