3
Duct Tape
3939
Technical Data
Product Description
June, 2005
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
Adhesive
Rubber
Colors
Silver
Standard Roll Length
60 yds. (54.8 m)
Standard Roll Width
0.94, 1.89, 2.83, 3.78 in.
film over
cloth scrim
(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.
