Premium weather-resistant film tape with Tedlar® PVF backing for long-term outdoor protection, offering superior adhesion, chemical resistance, and temperature flexibility from -100°F to 225°F.
3M™ Weather Resistant Film Tape 838 is a premium industrial-grade adhesive tape engineered for long-term outdoor exposure and weather protection applications. This white, 3.4 mil thick tape features a strong Tedlar® PVF Film backing that provides exceptional strength without adding bulk, combined with a high-performance acrylic adhesive that delivers immediate bonding and sustained adhesion across varying climate conditions. The tape is specifically designed for demanding applications in building and construction, aerospace, signage, military, and window and door industries where moisture intrusion and weathering resistance are critical requirements.
The tape's Tedlar® PVF backing offers outstanding mechanical properties and superior inertness to a wide variety of chemicals, solvents, and staining agents, making it ideal for harsh environmental conditions. With no plasticizers in the formulation, this tape maintains excellent long-term aging properties and remains tough and flexible across a broad temperature range from -100°F (-73°C) to 225°F (107°C). The acrylic adhesive is specifically formulated to resist many solvents including jet engine fuel, hydraulic fluid, and lubricating oils, ensuring reliable performance in industrial and aerospace applications.
Perfect for sealing seams on outdoor building panels, windows, doors, and shower door hinges, this tape prevents critical moisture intrusion while maintaining superior adhesion in climate and temperature variations. Each case contains 24 rolls of 2-inch width by 72-yard length tape, providing substantial coverage for commercial and industrial projects. The tape meets rigorous ASTM specifications (D3330, D3652, D3759) and is recommended exclusively for industrial and occupational use.
Key Features
- Tedlar® PVF Film backing provides exceptional strength without added thickness
- Excellent weather resistance ideal for long-term outdoor exposure applications
- Outstanding mechanical properties and inertness to chemicals, solvents and staining agents
- Acrylic adhesive resistant to jet fuel, hydraulic fluid and lubricating oils
- Maintains performance across extreme temperature range from -100°F to 225°F
- No plasticizers for superior long-term aging properties
- Tough and flexible construction suitable for broad temperature variations
- High shear strength adhesive provides immediate bonding and sustained adhesion
- Meets ASTM D3330, D3652, and D3759 specifications
- Single-sided adhesive design for versatile application requirements
Technical Specifications
| Specification |
Value |
| Product Type | Adhesive Tape |
| Brand | 3M™ |
| Model Number | 838 |
| UPC Code | 00021200044137 |
| Backing Material | Tedlar® PVF Film |
| Adhesive Type | Acrylic |
| Product Color | White |
| Width | 2 inches (5.1 cm) |
| Length | 72 yards (65.8 meters) |
| Overall Thickness | 3.4 mil (0.09 mm) |
| Backing Thickness | 2.1 mil (0.05 mm) |
| Adhesive Thickness | 3 mil (0.08 mm) |
| Adhesion Strength | 47 oz/in (51 N/100mm) |
| Tensile Strength | 24 lb/in (42 N/100mm) |
| Elongation at Break | 170% |
| Minimum Operating Temperature | -30°F (-34°C) |
| Maximum Operating Temperature | 225°F (107°C) |
| Number of Adhesive Sides | Single-sided |
| Product Form | Roll |
| Case Quantity | 24 rolls per case |
| Smallest Saleable Unit | Individual Roll |
| Shelf Life | 18 months from date of manufacture |
| Specifications Met | ASTM D3330, ASTM D3652, ASTM D3759 |
| Liner Material | Acrylic |
| Liner Color | White |
| Application Type | Exterior Side Panel Bonding |
| Industries | Military & Government, Aerospace, Building & Construction, Signage |
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