Duct tape is polycoated, industrialstrength tape with hightack adhesive. Easytotear tape is made of a waterproof polyethylene film with a polyester/cotton blend cloth carrier. Tape will not twist or curl during application and bonds where other tapes wont, including to recycled fibers, dust, hot and cold surfaces, and heavy loads. Use tape for generalpurpose HVAC use, packaging, sealing duct work, and for adhering cable to carpet or floors. Tape has a 9 mil thickness.