Premium weather-resistant adhesive tape with Tedlar® PVF backing for outdoor applications. 3/4 inch wide, 36 yard roll, 3.4 mil thickness, operates -100°F to 225°F with excellent chemical and solvent resistance.
3M™ Weather Resistant Film Tape 838 is a premium industrial-grade adhesive tape designed for long-term outdoor and weather-exposed applications. This white tape features a strong, thin Tedlar® PVF Film backing with a high shear strength and a solvent-resistant acrylic adhesive. The 2.1 mil Tedlar® PVF Film backing provides exceptional strength without adding thickness, making it ideal for applications where minimal buildup is critical. The tape measures 3/4 inch wide by 36 yards long with a total thickness of 3.4 mil, and comes in cases of 48 rolls for bulk purchasing.
This weather-resistant tape is specifically engineered for building and construction, aerospace, signage, military, and window and door industries. It demonstrates excellent resistance to weathering and outdoor exposure, with outstanding mechanical properties and inertness toward a wide variety of chemicals, solvents, and staining agents. The acrylic adhesive adheres immediately on contact to various substrates and maintains high, secure adhesion for extended periods even through climate and temperature variations. The tape operates reliably across a broad temperature range from -100°F (-73°C) to 225°F (107°C), with no plasticizers in the formulation contributing to excellent long-term aging properties.
Key applications include sealing seams of outdoor building panels, windows and doors, hinge seals on shower doors, and sealing critical areas from moisture intrusion. The adhesive is resistant to jet engine fuel, hydraulic fluid, and lubricating oils, making it an ideal choice for aerospace and industrial applications where solvent resistance is essential. With an 18-month shelf life and compliance with ASTM D3330, ASTM D3652, and ASTM D3759 specifications, this tape delivers reliable performance in the most demanding weather-resistant applications.
Key Features
- Tedlar® PVF Film backing provides exceptional strength without added thickness
- Excellent resistance to weathering and outdoor exposure for long-term durability
- Outstanding mechanical properties and inertness toward chemicals, solvents and staining agents
- High shear strength acrylic adhesive with immediate contact bonding capability
- Operates reliably across broad temperature range from -100°F to 225°F
- No plasticizers for superior long-term aging properties
- Resistant to jet engine fuel, hydraulic fluid and lubricating oils
- Maintains adhesion through climate and temperature variations
- Single-sided adhesive application for versatile use
- 18-month shelf life for extended storage capability
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Weather Resistant Film Tape 838 |
| Part Number | 838 |
| 3M Product Number | 838 |
| 3M ID | 7010048654 |
| UPC Code | 00051128998908 |
| Product Color | White |
| Overall Width (Imperial) | 3/4 inch |
| Overall Width (Metric) | 19.05 mm |
| Overall Length (Imperial) | 36 yards |
| Overall Thickness (Imperial) | 3.4 mil |
| Total Tape Thickness without Liner (Metric) | 0.09 mm |
| Backing Material | Tedlar PVF |
| Backing Thickness (Imperial) | 2.1 mil |
| Backing Thickness (Metric) | 0.05 mm |
| Adhesive Type | Acrylic |
| Adhesive Sides | Single-sided |
| Back Side Adhesive Thickness (Metric) | 0.05 mm |
| Adhesion Strength (Imperial) | 47 oz/in |
| Adhesion Strength (Metric) | 51 N/100mm |
| Tensile Strength (Imperial) | 24 lb/in |
| Tensile Strength (Metric) | 42 N/100mm |
| Elongation at Break | 170% |
| Minimum Operating Temperature (Fahrenheit) | -30°F |
| Minimum Operating Temperature (Celsius) | -34°C |
| Maximum Operating Temperature (Fahrenheit) | 225°F |
| Maximum Operating Temperature (Celsius) | 107°C |
| Temperature Range | -100°F to 225°F (-73°C to 107°C) |
| Liner Color | White |
| Liner Material | Acrylic |
| Product Form | Roll |
| Product Type | Tape |
| Smallest Saleable Unit | Roll |
| Case Quantity | 48 rolls per case |
| Shelf Life | 18 months from date of manufacture |
| Application | Exterior Side Panel Bonding |
| Industries | Military & Government, Aerospace, Building & Construction, Signage, Window & Door |
| Brand | 3M™ |
| Specifications Met | ASTM D3330, ASTM D3652, ASTM D3759 |
| Solvent Resistance | Resistant to jet engine fuel, hydraulic fluid, lubricating oils |
| Chemical Resistance | Outstanding inertness toward wide variety of chemicals and solvents |
| Plasticizer Content | None - contributes to good long-term aging properties |
| Weather Resistance | Excellent resistance to weathering and outdoor exposure |
| Flexibility | Tough and flexible over broad range of temperatures |
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