STM Specialty Tapes Manufacturing D670 Double Coated Tuff Tape III is an aggressive adhesive tape that is highly resistant to moisture and water. Withstands extreme temperature variations including humidity, heat, and cold. Tape carrier is 1.2 mils polypropylene, and adhesive is 3.5 mils on each side acrylic. It is resistant to plasticizers and offers superior adhesion to irregular surfaces. For greatest adhesion, the surface to be bonded must be clean, dry, and free of oil and dirt. 15/16 in x 36 yd Roll.