Premium 1/2 inch x 36 yard urethane foam tape with acrylic adhesive for industrial cushioning, damping, and sealing applications. High-density open-cell design traps moisture while allowing breathable airflow. Temperature rated to 350°F long-term. 18 rolls per case.
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 industrial-grade tape is specifically designed for cushioning, damping, and sealing applications across multiple industries. The natural-colored foam measures 1/2 inch wide by 36 yards long with a 125 mil (3.2 mm) thickness, making it ideal for electronics, automotive, and construction applications. The tape's high-density open-cell foam design effectively traps moisture, dust, and contaminants while allowing air and gas vapors to pass through, creating a breathable seal that protects sensitive components.
The adhesive is protected by a thick, silicone-treated paper liner and features 3M™ Adhesive 350, a modified acrylic adhesive that provides high initial quick-stick to a variety of substrates. This adhesive delivers excellent chemical resistance and shear holding strength, even at elevated temperatures, with performance capabilities up to 200°F (93°C) short-term and 350°F (176°C) long-term. The tape offers excellent cushioning characteristics while providing superior absorbency to seal out moisture, dust, and drafts, making it suitable for both indoor and outdoor applications.
Recommended for cushioning and damping sound in electronics such as printers, keyboards, computers, aircraft lights, and automotive dashboards, as well as recessed lighting and door, window, and cabinet seals. Each case contains 18 rolls, with a 24-month shelf life. The product is for industrial/occupational use only and must be selected and used in compliance with applicable health and safety regulations and standards.
Key Features
- Firm, high-density open-cell foam design traps moisture, dust and contaminants effectively
- Breathable seal allows air and gas vapors to pass through while maintaining protection
- Dampens sound and absorbs vibration in electronic applications and automotive components
- Excellent cushioning characteristics with high absorbency for moisture and draft sealing
- 3M™ Adhesive 350 provides high initial quick-stick and excellent shear strength at elevated temperatures
- Pressure-sensitive acrylic adhesive on single side with silicone-treated paper liner protection
- Temperature performance rated to 200°F short-term and 350°F long-term
- Suitable for indoor and outdoor applications with 24-month shelf life
Technical Specifications
| Specification |
Value |
| Product Model | 3M™ Urethane Foam Tape 4108 |
| Part Number | 4108 |
| UPC Code | 00021200034060 |
| Overall Width (Imperial) | 0.5 in |
| Overall Width (Metric) | 1.3 cm |
| Overall Length (Imperial) | 36 yd |
| Overall Length (Metric) | 32.9 m |
| Backing Material | Urethane |
| Backing Thickness (Imperial) | 125 mil |
| Backing Thickness (Metric) | 3.2 mm |
| Total Tape Thickness without Liner (Imperial) | 125 mil |
| Total Tape Thickness without Liner (Metric) | 3.2 mm |
| Product Color | Natural |
| Foam Type | Firm, High-Density Open-Cell |
| 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 | 200°F (93°C) |
| Temperature Performance Long-Term | 350°F (176°C) |
| Indoor/Outdoor Rating | Indoor/Outdoor |
| Smallest Saleable Unit | Roll |
| Units per Case | 18 rolls |
| Shelf Life | 24 months |
| Application Type | Sealing, Window and Door Glazing |
| Industries Served | Appliance, Construction, General Industrial, Specialty Vehicles, Transportation |
| Recommended Applications | Electronics cushioning and damping, recessed lighting, door/window/cabinet seals |
| Brand | 3M™ |
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