Heavy Duty Duct Tape 3939 Technical Data March, 2013 Product Description 3M Heavy Duty Duct Tape 3939 is composed of waterproof polyethylene film over cloth scrim backing with a rubber adhesive used for demanding duct tape applications. Backing Adhesive Colors Standard Roll Length Standard Roll Width Product Construction Polyethylene Rubber Silver 60 yds. (54.8 m) 0.94, 1.89, 2.83, 3.78 in. film over (24, 48, 72, 96 mm) cloth scrim Note: The following technical information and data should be considered representative Typical Physical or typical only and should not be used for specification purposes. Properties ASTM Test Method Adhesion to Steel: 58 oz./in. width (63 N/100 mm) D-3330 Tensile Strength: 27 lbs./in. width (472 N/100 mm) D-3759 Elongation at Break: 17% D-3759 Thickness: 8.6 mils (0.22 mm) D-3652 Temperature Use Range: Up to 200F (93C) Burn Test:* Flame Spread Index 0 E-84 Smoke Developed Index 30 *ASTM E-84, UL-723, NFPA 255, and UBC 8-1 are publications of the same test method. Features Offers easy tear and conformability. Low tack roll edges (48 mm) so edges stay cleaner for less surface contamination and less waste. Individual roll wrap (48 mm) that preserves integrity of the roll for less waste. Product number printed in core to insure that correct product is used. Polyethylene coated cloth scrim that resists moisture to prolong tape bond. Good tensile strength for tough applications. Rubber adhesive that adheres aggressively to most surfaces for good holding power and a tight seal. 3M Heavy Duty Duct Tape 3939 Application Ideas Hanging polyethylene drapes for containment activities, industrial masking and sandblast overspray protection. Patching, reinforcing, bundling, moisture proofing, sealing, splicing, temporary repair. Taping and splicing insulation. Useful in the convention industry for holding and seaming carpet padding, taping down cords and hinging poster board panels. Storage Store under normal conditions of 60 to 80F (16 to 27C) and 40 to 60% R.H. in the original carton. To obtain best performance, use this product within 12 months from date of Shelf Life manufacture. The technical information, recommendations and other statements contained in this document are Technical Information based upon tests or experience that 3M believes are reliable, but the accuracy or completeness of such information is not guaranteed. Many factors beyond 3Ms control and uniquely within users knowledge and control can affect the use Product Use and performance of a 3M product in a particular application. Given the variety of factors that can affect the use and performance of a 3M product, user is solely responsible for evaluating the 3M product and determining whether it is fit for a particular purpose and suitable for users method of application. Unless an additional warranty is specifically stated on the applicable 3M product packaging or product Warranty, literature, 3M warrants that each 3M product meets the applicable 3M product specification at the time Limited Remedy, 3M ships the product. 3M MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS OR and Disclaimer IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY OR CONDITION ARISING OUT OF A COURSE OF DEALING, CUSTOM OR USAGE OF TRADE. If the 3M product does not conform to this warranty, then the sole and exclusive remedy is, at 3Ms option, replacement of the 3M product or refund of the purchase price. Except where prohibited by law, 3M will not be liable for any loss or damage arising from the 3M product, Limitation of Liability whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted, including warranty, contract, negligence or strict liability. ISO 9001 This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001 standards. Industrial Adhesives and Tapes Division 3M Center, Building 225-3S-06 St. Paul, MN 55144-1000 Recycled Paper 3M is a trademark of 3M Company. 800-362-3550 877-369-2923 (Fax) 40% pre-consumer Printed in U.S.A. www.3M.com/industrial 10% post-consumer 3M 2013 70070951812 (3/13)