Professional-grade urethane foam tape with acrylic adhesive for industrial sealing, damping, and cushioning applications. Features high-density open-cell foam design, moisture and dust trapping capability, and superior temperature performance up to 350°F.
3M™ Urethane Foam Tape 4108 is a premium firm, high-density, open-cell foam tape featuring a pressure-sensitive acrylic adhesive on one side. This professional-grade sealing tape is engineered to provide exceptional cushioning and damping characteristics while maintaining breathability for air and gas vapor passage. The tape measures 1 inch wide by 36 yards long with a thickness of 125 mil (3.2 mm) and comes in a convenient 9-roll case for industrial applications.
Designed for industrial and occupational use, this urethane foam tape excels at trapping moisture, dust, and contaminants while allowing controlled airflow essential for electronic component cooling. The natural color foam with silicone-treated paper liner delivers excellent initial quick-stick adhesion to multiple substrates and maintains superior shear strength even at elevated temperatures up to 350°F (176°C) long-term performance. The high-density open-cell foam structure effectively dampens sound and absorbs vibration, making it ideal for electronics, automotive applications, and precision sealing applications.
The 3M Adhesive 350 formulation provides chemical-resistant bonding with excellent holding strength, while the firm foam backing offers an attractive and clean appearance after application. This tape performs reliably indoors and outdoors across various industries including appliance manufacturing, construction, general industrial applications, specialty vehicles, and transportation. With a 24-month shelf life and single-sided adhesive configuration, this tape is ready for immediate deployment in demanding industrial environments requiring reliable moisture and draft sealing with vibration damping capabilities.
Key Features
- Natural firm high-density open-cell foam design that traps moisture, dust and contaminants effectively
- Breathable seal allows air and gas vapors to pass through while maintaining excellent moisture barrier
- Superior sound dampening and vibration absorption for electronic applications and precision equipment
- High initial quick-stick adhesion to multiple substrates with excellent shear strength and chemical resistance
- Performs reliably at temperatures up to 350°F (176°C) long-term with 3M Adhesive 350 formulation
- Silicone-treated paper liner protects adhesive and ensures clean appearance after application
- Single-sided acrylic adhesive configuration ideal for sealing, cushioning and damping applications
- 24-month shelf life and suitable for indoor/outdoor industrial use across multiple industries
Technical Specifications
| Specification |
Value |
| Product Name | 3M Urethane Foam Tape 4108 |
| Part Number | 4108 |
| UPC Code | 00021200034084 |
| Overall Width (Imperial) | 1 inch |
| Overall Width (Metric) | 2.5 cm |
| Overall Length (Imperial) | 36 yards |
| Overall Length (Metric) | 32.9 meters |
| Backing Material | Urethane |
| Foam Type | Firm, High-Density Open-Cell |
| Thickness (Imperial) | 125 mil |
| Thickness (Metric) | 3.2 mm |
| Product Color | Natural |
| Adhesive Type | Acrylic (3M Adhesive 350) |
| Number of Adhesive Sides | Single-sided |
| Primary Liner Material | Silicone Treated Paper |
| Primary Liner Color | White |
| Primary Liner Thickness (Imperial) | 3 mil |
| Primary Liner Thickness (Metric) | 0.08 mm |
| Density (Imperial) | 16 lb/ft³ |
| Density (Metric) | 256 kg/m³ |
| Tensile Strength (Imperial) | 130 lb/in |
| Tensile Strength (Metric) | 895 kPa |
| Temperature Performance Short-Term | Up to 200°F (93°C) |
| Temperature Performance Long-Term | Up to 350°F (176°C) |
| Application Type | Sealing, Window and Door Glazing, Cushioning, Damping |
| Indoor/Outdoor Rating | Indoor/Outdoor |
| Smallest Saleable Unit | Roll |
| Units per Case | 9 rolls |
| Shelf Life | 24 months |
| Brand | 3M |
| Industries | Appliance, Construction, General Industrial, Specialty Vehicles, Transportation |
| Use Classification | Industrial/Occupational Use Only |
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