• Description for 3M 3939

    Composed of waterproof polyethylene film over cloth scrim backing with a rubber adhesive used for demanding duct tape applications.

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    Application Type Bond, Repair, Seal
    1 Part or 2 Part 1 Part
    Material Form Tape
    Substrate Steel
    Manufacturer 3M
    Chemistry rubber, Polyethylene
    Cure Method Pressure Sensitive
    Color Silver
    Key Specifications Meets UL 723, HUD, and BOCA codes
  • Technical Data for 3M 3939

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 1 Part
    • Material Form
      • Tape
    • Substrate
    • Industry
      • Industrial - industrial masking
      • Other - demanding duct tape applications
    • Chemistry
      • Other - rubber, Polyethylene
    • Cure Method
      • Pressure Sensitive (min) - Pressure Sensitive
    • Color
      • Gray - Silver
    • Key Specifications
      • UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association) - Meets UL 723, HUD, and BOCA codes
    Specifications
    Bond Strength
    General Bond Strength (psi) 55 (oz./in.) Test Method
    Tensile Strength (psi) 27 (lbs./in.) Test Method
    Hardness
    Elongation (%) 17 Test Method
    Business Information
    Shelf Life Details 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 Temperature (°F) 140 to 176
    Shelf Life Type From date of manufacture
    Shelf Life (mon) 12
  • Best Practices for 3M 3939

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  • Comparable Materials for 3M 3939

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Tensile Strength Test Methods
Tensile Strength Test Method
27 (lbs./in.) ASTM D-3759, width
General Bond Strength Test Methods
General Bond Strength Substrate Test Method
55 (oz./in.) Steel ASTM D-3330, width
Elongation Test Methods
Elongation Test Method
17 % D-3759 (at Break)
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