3M™ 051125-85311 Silver 425 Aluminum 4.6 Mil Foil Tape – 2″ x 60 Yard Roll
3M 425 Aluminum Foil Tape by 3M is a professional-grade aluminum foil tape available in 2″ x 60 Yard Roll format. Designed for use on HVAC Ductwork, Thermal Insulation, Metal Sealing, EMI Shielding, it delivers reliable performance, long-lasting adhesion, and protection across a wide range of industrial, commercial, and specialized applications. Silver in color, this product is trusted by engineers, safety professionals, and maintenance teams worldwide who demand consistent, specification-grade tape performance in every application.
| Attribute | Detail |
|---|---|
| Manufacturer Part Number (MPN) | 7100053630 |
| Brand | 3M |
| Product / Model Name | 3M 425 Aluminum Foil Tape |
| Color | Silver |
| Package Size | 2″ x 60 Yard Roll |
| Product Type | Aluminum Foil Tape |
| Specification | N/A |
| Application Surfaces | HVAC Ductwork, Thermal Insulation, Metal Sealing, EMI Shielding |
Technical Information
3M 425 is a 4.6 mil dead-soft aluminum foil tape with an aggressive acrylic adhesive system that conforms easily to irregular duct surfaces and provides a durable, airtight, moisture-resistant seal on HVAC ductwork, refrigeration insulation, and thermal jacketing. The dead-soft aluminum foil backing allows hand conforming to contoured surfaces without springing back, while the acrylic adhesive maintains bond integrity across a wide temperature range. 3M 425 is also widely used for EMI/RFI shielding applications, reflecting radiant heat in thermal insulation systems, and sealing metal flashing and foil-faced insulation joints in building construction.
Why Choose 3M 425 Aluminum Foil Tape?
- Dead-Soft Aluminum Foil — Conforms easily to curved and irregular duct surfaces without springing back
- Airtight HVAC Sealing — Creates moisture-resistant, airtight seal on ductwork and insulation
- 4.6 Mil Thickness — Durable foil construction for long-term HVAC and industrial use
- Acrylic Adhesive — Temperature-resistant adhesive maintains bond across service range
- EMI Shielding Capable — Conductive aluminum foil provides electromagnetic shielding function
Frequently Asked Questions
Q: What is 3M 425 Aluminum Foil Tape used for?
A: 3M 425 Aluminum Foil Tape is used for sealing HVAC ductwork joints and insulation seams, thermal jacketing of pipes and equipment, radiant heat reflection, EMI/RFI shielding, and metal surface sealing in building construction and industrial applications.
Q: What is the MPN for 3M 425 Silver Foil Tape 2″ x 60 Yard?
A: The Manufacturer Part Number (MPN) is 7100053630.
Q: Is 3M 425 Aluminum Foil Tape UL listed for HVAC duct sealing?
A: 3M 425 is widely used in HVAC duct sealing applications. For specific UL listing and code compliance information, consult the current 3M 425 product datasheet and applicable HVAC code requirements in your jurisdiction.
Q: What temperature range does 3M 425 Aluminum Foil Tape handle?
A: 3M 425 is rated for a broad service temperature range suitable for HVAC and industrial applications. Consult the current 3M 425 Technical Data Sheet for the specific minimum and maximum continuous service temperature ratings.
Q: Can 3M 425 Foil Tape be used for EMI shielding?
A: Yes. 3M 425 uses a conductive aluminum foil backing that provides electromagnetic interference (EMI) and radio frequency interference (RFI) shielding when applied to enclosures, cable jackets, and electronic equipment requiring EMI attenuation.


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