3M 425 Silver Aluminum Foil Tape

Dead-soft aluminum foil tape with a pressure-sensitive acrylic adhesive designed for demanding industrial and aerospace applications.

3M Aluminum Foil Tape 425 features a dead-soft aluminum foil backing that provides excellent heat and light reflection to protect against high temperatures and UV degradation. The foil acts as a strong barrier against moisture, dust, flame, and certain chemicals, making it ideal for aircraft paint stripping and industrial masking applications.

The high-performance acrylic adhesive offers superior resistance to temperature extremes, UV exposure, and solvents. Designed for long-term outdoor use, this tape delivers excellent aging characteristics and reliable performance in harsh environments.

Key Features

Dead-soft aluminum foil backing for excellent conformability
High heat and light reflectivity
Excellent barrier against moisture, dust, flame, and chemicals
Acrylic adhesive with strong temperature, UV, and solvent resistance
Designed for harsh, long-term outdoor environments
Meets F.A.R. 25.853(a) flame resistance requirements

Technical Specifications

Adhesion to Steel	47 oz/in (51 N/100 mm)
Adhesive Type	Acrylic
Backing Material	Aluminum Foil
Backing Thickness	2.8 mil (0.07 mm)
Brand	3M
Color	Silver
Elongation	8%
Length	60 yd (54.86 m)
Liner Type	Easy Release Film
Operating Temperature	-65°F to 300°F (-54°C to 149°C)
Product Form	Roll
Shelf Life	24 Months
Shielding Effectiveness	Fair (50–70 dB)
Tape Type	EMI Shielding
Tensile Strength	30 lb/in (525 N/100 mm)
Total Thickness	4.6 mil
Width	2 in (50.80 mm)
Units per Case	24

Applications

Masking, sealing, seaming, and shielding
EMI/RFI shielding of seams
Heat and light reflection
Aircraft paint stripping and chemical milling
Harness wrapping and vibration damping
HVAC, appliance, automotive, aerospace, military, and electronics industries

Why Choose 3M 425 Aluminum Foil Tape?

3M 425 Aluminum Foil Tape delivers reliable performance where heat resistance, chemical durability, and long-term adhesion matter most. Its conformable foil backing and high-performance acrylic adhesive make it a trusted solution for professional, industrial, and aerospace environments.

3M 425 Aluminum Foil Tape 2" x 60yds (24 Rolls)