Product Description
3M 3939 - Duct Tape Silver
3M Duct Tape 3939 is composed of waterproof polyethylene coated cloth backing with a rubber adhesive used for demanding duct tape applications.
Product Construction
- Backing - Polyethylene coated cloth scrim A
 - Adhesive - Rubber
 - Colors - Silver
 - Standard Roll Length - 60yds. (54.8 m)
 - Standard Roll Width - 1.89 in. (48 mm)
 
Features
- Offers easy tear and conformability.
 - Meets UL 723, HUD and BOCA codes.
 - Low tack roll edges (48mm) 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.
| Typical Physical 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 (Flame spread 0, Smoke developed 30) | E-84 | 
Product Videos
Custom Field
Condition New