3M 4318-1/2X36 ~ Urethane Foam Tape 4318 Charcoal Grey (1/2 Inch x 36 Yards)3M Urethane Foam Tape, 4318, charcoal grey, 0. 5 in x 36. 0 yd (1. 3 cm x 32. 9 m) The 3M Urethane Foam Tape 4318 is a conformable, low density, open cell foam tape with a pressure sensitive acrylic adhesive on one side This tape will adhere to a variety of substrates and can be used in numerous mounting applications to dampen sound and create a clean and durable product. Part # 7000048516 Sold in qty's of 18 Adhesive type Acrylic Length 36yds Width 1