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.
Product Construction
Backing
Polyethylene
film over
cloth scrim
Adhesive
Rubber
Colors
Silver
Standard Roll Length
60 yds. (54.8 m)
Standard Roll Width
0.94, 1.89, 2.83, 3.78 in.
(24, 48, 72, 96 mm)
Typical Physical
Properties
Note: The following technical information and data should be considered representative
or typical only and should not be used for specification purposes.
ASTM Test Method
Adhesion to Steel:
Tensile Strength:
Elongation at Break:
Thickness:
Temperature Use Range:
Flammability:
55 oz./in. width (60 N/100 mm)
25 lbs./in. width (438 N/100 mm)
17%
9.0 mils (0.23 mm)
Up to 200°F (93°C)
Meets UL 723
(Flame spread 0, Smoke developed 30)
D-3330
D-3759
D-3759
D-3652
E-84
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 80°F (16° to 27°C) 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.
Product Use
All statements, technical information and recommendations contained in this document are based upon
tests or experience that 3M believes are reliable. However, many factors beyond 3M’s 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 user’s 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
user’s method of application.
Warranty and
Limited Remedy
Unless stated otherwise in 3M’s product literature, packaging inserts or product packaging for individual
products, 3M warrants that each 3M product meets the applicable specifications at the time 3M ships the
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 user’s application. If the 3M product is defective within the
warranty period, your exclusive remedy and 3M’s and seller’s sole obligation will be, at 3M’s option, to
replace the product or refund the purchase price.
Limitation of Liability
Except where prohibited by law, 3M and seller will not be liable for any loss or damage arising from the
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
800-362-3550 • 877-369-2923 (fax)
www.3M.com/industrial
Recycled Paper
40% pre-consumer
10% post-consumer
Printed in U.S.A.
©3M 2005 70-0709-5181-2
(6/05)
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