Premium Industrial Performance: 3M™ Aluminium Foil Tape 425

Q: What converting formats are available from EKO-TECH?

We offer slitting, rewinding, die/kiss cutting, sheeting , and cross-wound spooling , fully customized to your specs.

Q: What temperature can 3M™ Aluminium Foil Tape 425 handle?

It withstands short-term exposure up to 260°C (500°F) , ideal for lead-free soldering or heat shielding.

3M™ Aluminium Foil Tape 425 is a versatile, high-temperature resistant tape designed for demanding applications across aerospace, electronics, and industrial sectors. Made with a dead-soft aluminum backing and a pressure-sensitive acrylic adhesive, this foil tape excels in masking, sealing, shielding, and heat reflection.

At EKO-TECH, we go beyond supply — we custom-convert the 3M™ Aluminium Foil Tape 425 to match your specific process and product design. Whether you need slitted rolls, custom die-cuts, or cross-wound spools, we’re your engineering-focused converting partner.

Where 3M™ Aluminium Foil Tape 425 Excels

Electronics & Flexible Circuits: Heat shielding and grounding in FPC assemblies
Aerospace & Defense: Masking during plating, chemical milling, and heat treatments
HVAC & Refrigeration: Sealing and patching insulation and ductwork
Automotive Manufacturing: Thermal barrier for engine components and underhood shielding
Construction & Facade Systems: Reflective insulation, vapor barrier sealing
Lead-Free Soldering: Withstands short-term exposure to 260°C (500°F)

Why Choose 3M™ Aluminium Foil Tape 425?

High Temperature Resistance: Reliable adhesion even after short-term 260°C exposure
Excellent Conformability: Dead-soft aluminum backing adapts to curves and irregular surfaces
Durability in Harsh Environments: UV, moisture, and chemical-resistant
Low Outgassing: Ideal for cleanroom and electronic environments
Electromagnetic Shielding: Effective in EMI/RFI suppression
Superior Adhesion: Bonds to metals, plastics, and composite materials

Why Work with a 3M Select Converter Like EKO-TECH?

As an official 3M Select Converter, we don’t just deliver product — we deliver precision. Our in-depth material expertise, paired with engineered converting capabilities, ensures optimal tape performance in your end application.

Benefits of Working with EKO-TECH:

3M-certified quality and consistency
Application engineering and prototyping support
Competitive lead times and low MOQ converting
ISO-compliant manufacturing standards
Europe-wide support and logistics

How We Convert the 3M™ Aluminium Foil Tape 425

Tailored to your manufacturing line and design specs, we offer flexible and advanced converting:

Slitting to Custom Widths
Rewinding to Individual Lengths
Sheeting for Manual or Automated Handling
Die Cutting & Kiss Cutting – including complex patterns
Cross-Wound Spooling for uninterrupted processing

Our precision converting ensures minimal waste, optimal placement, and production-ready formats that boost your throughput.

Why Choose 3M™ Aluminum Foil Tape 425?

Flame and Weather Resistant: Designed to withstand exposure to flame, weathering, moisture, and UV, this tape ensures long-lasting performance indoors or outdoors.
Highly Conformable: The dead-soft aluminum foil backing easily conforms to irregular and uneven surfaces, providing a reliable seal even on complex shapes.
Industry Recognized: Certified for low flammability with UL 746C and UL 723 Class “L” classifications, and meets L-T-80C and F.A.R 25.853(a) standards, ensuring safety and compliance in critical applications.

Technical data:

Total thickness of tape without backing 0.12 mm
Shelf life 24 month
Adhesive thickness on reverse side 0.05 mm
Backing thickness 0.07 mm
Product colour Silver
Number of units per package 1.0, 12.0, 24.0, 48.0
Maximum operating temperature 149 degrees Celsius
Brands 3M™
Backing material Aluminium foil
Minimum operating temperature -54 degrees Celsius
Backing Aluminium foil
Industry Military and government, Automotive, Electronics, General industry, Special vehicle, Construction, Metalworking, Aerospace, Home appliances, Transportation
Adhesive type Acrylic
Elongation at break 6.0 %
Tensile strength 49 N/100 mm, 49 N/cm