Premium 4-inch industrial urethane foam tape with acrylic adhesive, 125 mil thickness, ideal for sound dampening, moisture sealing, and component cushioning in electronics and automotive applications.
3M™ Urethane Foam Tape 4108 is a premium industrial-grade foam tape engineered for professional applications requiring superior sound dampening and moisture sealing. This single-sided adhesive tape features a firm, high-density, open-cell urethane foam construction with a pressure-sensitive acrylic adhesive (3M™ Adhesive 350) that provides excellent initial quick-stick and long-term holding strength. The 4-inch wide by 36-yard roll delivers consistent performance across diverse substrates and environmental conditions.
Designed specifically for electronics, automotive, and construction applications, this tape excels at cushioning sensitive components while allowing air circulation for thermal management. The natural color foam with silicone-treated paper liner offers an attractive, clean appearance after application. With a thickness of 125 mil (3.2 mm) and density of 16 lb/ft³, the tape provides optimal balance between cushioning and structural integrity. The open-cell design effectively traps moisture, dust, and contaminants while maintaining breathability for applications where airflow is essential.
This professional-grade tape performs reliably across a wide temperature range, with Adhesive 350 rated for continuous use up to 350°F (176°C) long-term and 200°F (93°C) short-term exposure. Each case contains 2 rolls, making it ideal for commercial and industrial operations. The product is intended for industrial and occupational use only and must be selected and used in compliance with all applicable health and safety regulations and standards.
Key Features
- Firm, high-density open-cell foam construction traps moisture, dust and contaminants effectively
- Breathable design allows air and gas vapors to pass through for optimal thermal management
- Pressure-sensitive acrylic adhesive provides high initial quick-stick and excellent shear strength
- Superior sound dampening and vibration absorption for electronics and automotive applications
- Wide temperature performance range rated to 350°F long-term and 200°F short-term
- Single-sided adhesive with silicone-treated paper liner for clean appearance
- Excellent cushioning characteristics protecting sensitive components from damage
- Consistent performance across multiple substrates and environmental conditions
Technical Specifications
| Specification |
Value |
| Product Number | 4108 |
| Overall Width | 4 inches (101.6 mm) |
| Overall Length | 36 yards (32.91 meters) |
| Thickness | 125 mil (3.2 mm) |
| Foam Type | Firm, high-density open-cell urethane |
| Adhesive Type | Pressure-sensitive acrylic (3M™ Adhesive 350) |
| Adhesive Sides | Single-sided |
| Density | 16 lb/ft³ (256 kg/m³) |
| Backing Material | Urethane foam |
| Primary Liner | Silicone-treated paper (white, 3 mil / 0.08 mm) |
| Product Color | Natural |
| Tensile Strength | 130 lb/in (895 kPa) |
| Temperature Range | Up to 350°F (176°C) long-term, 200°F (93°C) short-term |
| Shelf Life | 24 months |
| Units per Case | 2 rolls |
| Smallest Saleable Unit | Roll |
| Application | Sealing, window and door glazing, sound dampening, cushioning |
| Indoor/Outdoor | Indoor/Outdoor |
| Industries | Appliance, Construction, General Industrial, Specialty Vehicles, Transportation |
| UPC | 00021200710179 |
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