Professional-grade aluminum foil tape with thermally conductive acrylic adhesive for heat shielding, chemical masking, and industrial sealing applications. 21 in x 60 yd roll with UL certification and temperature range -65°F to 300°F.
3M™ Aluminum Foil Tape 427 is a premium industrial-grade adhesive tape designed for demanding applications across multiple industries. This linered version features a dead soft aluminum foil backing with highly engineered acrylic adhesive, making it ideal for heat shielding, heat reflecting, chemical masking, and light enhancement applications. The tape measures 21 inches wide by 60 yards long with a total thickness of 4.6 mil, providing excellent coverage for large-scale industrial projects.
The thermally conductive aluminum backing effectively dissipates heat over the tape surface to reduce hot spots and protect substrates from high temperature effects. With a backing thickness of 2.8 mil and acrylic adhesive thickness of 1.8 mil, this tape maintains strong and reliable bonding even under extreme conditions. It withstands exposure to high heat and humidity, moisture, weathering, UV radiation, and various solvents, providing excellent work life both indoors and outdoors. The easy-release film liner (3.1 mil thick) enables clean removal after masking applications.
Recognized by UL to UL 746C (File E 122798) and classified by UL to UL 723 Class 'L' for low flammability rating (File R 7311), this tape meets FAR 25.853(a) specifications. Operating temperature range spans from -65°F to 300°F (-54°C to 149°C), with tensile strength of 28 lb/in and elongation at break of 6%. Ideal for aerospace, automotive, appliance, construction, electronics, and general industrial applications including refrigerator and freezer coil attachment, seaming, sealing HVAC ductwork, and chemical paint stripping operations.
Key Features
- Thermally conductive dead soft aluminum foil backing dissipates heat and protects temperature-sensitive materials
- Highly engineered acrylic adhesive provides long-term durability with clean removal after masking applications
- Chemical resistant backing protects surfaces during de-paint and chemical masking operations
- Withstands extreme conditions including high heat, humidity, moisture, weathering, UV exposure and solvents
- UL recognized to UL 746C and classified to UL 723 Class L for low flammability rating
- Heat and light reflective properties enhance lighting efficiency and surface protection
- Conforms to curved and uneven surfaces for versatile application coverage
- Operating temperature range from -65°F to 300°F meets aerospace and automotive specifications
Technical Specifications
| Specification |
Value |
| Product Number | 427 |
| Brand | 3M™ |
| Overall Width | 21 inches (533.4 mm) |
| Overall Length | 60 yards (54.86 m) |
| Total Tape Thickness | 4.6 mil |
| Backing Material | Dead Soft Aluminum Foil |
| Backing Thickness | 2.8 mil (0.07 mm) |
| Adhesive Type | Acrylic |
| Adhesive Thickness | 1.8 mil (0.05 mm) |
| Primary Liner | Easy Release Film - 3.1 mil (0.08 mm) |
| Product Color | Silver |
| Tensile Strength | 28 lb/in (49 N/100mm) |
| Elongation at Break | 6% |
| Minimum Operating Temperature | -65°F (-54°C) |
| Maximum Operating Temperature | 300°F (149°C) |
| UL Recognition | UL 746C (File E 122798) |
| UL Classification | UL 723 Class L - Low Flammability |
| Specifications Met | FAR 25.853(a), L-T-80C |
| Smallest Saleable Unit | Roll |
| UPC | 00051125854948 |
| 3M ID | 7010314238 |
| Suitable For | Die Cutting Applications (Linered Version) |
Order 3M Aluminum Foil Tape 427 Silver 21 inch 60 yard Roll at wholesale prices for companies and factories in Iraq and Middle East, get the best deals on bulk purchases, contact us today.
