3 Duct Tape 3939 Technical Data June, 2005 Product Description 3M 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: 55 oz./in. width (60 N/100 mm) D-3330 Tensile Strength: 25 lbs./in. width (438 N/100 mm) D-3759 Elongation at Break: 17% D-3759 Thickness: 9.0 mils (0.23 mm) D-3652 Temperature Use Range: Up to 200F (93C) Flammability: Meets UL 723 E-84 (Flame spread 0, Smoke developed 30) Features Offers easy tear and conformability. Meets UL 723, HUD, and BOCA codes. 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 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. Shelf Life To obtain best performance, use this product within one year from date of manufacture. All statements, technical information and recommendations contained in this document are based upon Product Use tests or experience that 3M believes are reliable. However, many factors beyond 3Ms control can affect the use and performance of a 3M product in a particular application, including the conditions under which the product is used and the time and environmental conditions in which the product is expected to perform. Since these factors are uniquely within the users knowledge and control, it is essential that the user evaluate the 3M product to determine whether it is fit for a particular purpose and suitable for the users method of application. Unless stated otherwise in 3Ms product literature, packaging inserts or product packaging for individual Warranty and products, 3M warrants that each 3M product meets the applicable specifications at the time 3M ships the Limited Remedy product. Individual products may have additional or different warranties as stated on product literature, package inserts or product packages. 3M MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY ARISING OUT OF A COURSE OF DEALING, CUSTOM OR USAGE OF TRADE. User is responsible for determining whether the 3M product is fit for a particular purpose and suitable for users application. If the 3M product is defective within the warranty period, your exclusive remedy and 3Ms and sellers sole obligation will be, at 3Ms option, to replace the product or refund the purchase price. Except where prohibited by law, 3M and seller will not be liable for any loss or damage arising from the Limitation of Liability 3M product, whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted, including warranty, contract, negligence or strict liability. ISO 9001:2000 This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001:2000 standards. 3 Industrial Business Industrial Adhesives and Tapes Division 3M Center, Building 21-1W-10, 900 Bush Avenue St. Paul, MN 55144-1000 Recycled Paper 800-362-3550 877-369-2923 (fax) 40% pre-consumer Printed in U.S.A. www.3M.com/industrial 10% post-consumer 3M 2005 70-0709-5181-2 (6/05)