3M™ Contractor Grade Duct Tape 3979

Technical Information Note

The following technical information and data should be considered representative or typical only and should not be

used for speci cation purposes.

Typical Physical Properties

Property

Values

Method

Color

Silver

Total Tape Thickness

0.31 mm

7.9 mil

ASTM D3652

Backing

Polyethylene lm over

cloth scrim

Adhesive

Synthetic rubber

Typical Performance Characteristics

Property Values

Method

Dwell/Cure

Time

Substrate

Notes

180°

Peel

Adhesion

7.4 N/cm

68 oz/in

ASTM

D3330

Initial

Stainless

Steel

12 in/min (300 mm/min)

Tensile

Strength

56 N/cm

32 lb/in

ASTM

D3759

Elongation

at

Break

26 %

ASTM

D3759

Temperature

Use

Range

Up to 93

°C

Up to 200

°F