Constructed of polyethylene film laminated to cloth with a synthetic and natural rubber blend adhesive, this very thick and strong tape resists curling and tears off the roll cleanly even when used in the most demanding jobs. 3M™ Super Duty Duct Tape DT17 is designed to provide a maximum-strength, long-lasting solution for the ultimate applications. A Tape for the Toughest Job Originally developed for heating, ventilating and air conditioning (HVAC) applications, duct tape is used today in a variety of maintenance, repair and construction settings. Due to its unique design and price, 3M™ Super Duty Duct Tape DT17 is considered the strongest choice for the jobs where the thickest tape is necessary. It can be applied in temperatures as low as 40°F and used in temperatures as high as 150°F for up to 30 minutes. 3M™ Super Duty Duct Tape DT17 is available exclusively in black. Despite it being the thickest of 3M's duct tapes, its polyethylene backing can be torn from the roll to stick instantly. While it bonds firmly to a number of substrates - including plastic, glass and sealed concrete - it is ideal for jobs involving the repairing, seaming and protection of metal parts and surfaces. Built to Stick 3M's family of rugged cloth and duct tapes adheres to most surfaces for applications ranging from bundling to moisture proofing, sealing to splicing, reinforcing to hanging poly drapes. Available in a variety of thicknesses and strengths, these tapes are known best for their hand tearability, high tensile strength and conformability.