Premium industrial weather-resistant film tape with Tedlar® PVF backing, acrylic adhesive, and superior weathering resistance for outdoor sealing and bonding applications. 1 inch × 72 yard rolls, 36 per case.
3M™ Weather Resistant Film Tape 838 is a premium industrial-grade adhesive tape designed for long-term outdoor exposure and weather protection applications. This white tape features a 3.4 mil thickness with a strong Tedlar® PVF Film backing that provides exceptional strength without adding bulk. The tape combines a high-shear acrylic adhesive with superior weathering resistance, making it ideal for demanding applications in building and construction, aerospace, signage, military, and window and door industries.
The tape is engineered with a 2.1 mil Tedlar® PVC Film backing that delivers increased durability and mechanical strength while maintaining a thin profile. Its acrylic adhesive adheres immediately upon contact and maintains secure bonding even under extreme temperature fluctuations ranging from -100°F (-73°C) to 225°F (107°C). The formulation contains no plasticizers, ensuring excellent long-term aging properties and resistance to a wide variety of chemicals, solvents, and staining agents including jet engine fuel, hydraulic fluid, and lubricating oils.
This versatile tape is ideal for sealing outdoor building panel seams, windows, doors, shower door hinges, and other critical areas requiring moisture intrusion prevention. Each case contains 36 rolls of 72-yard length tape, providing substantial coverage for industrial and occupational applications. The product meets ASTM D3330, ASTM D3652, and ASTM D3759 specifications, ensuring compliance with industry standards. For industrial and occupational use only, this tape represents the gold standard in weather-resistant bonding solutions.
Key Features
- Tedlar® PVF Film backing provides exceptional strength without added thickness
- Excellent resistance to weathering and outdoor exposure applications
- Outstanding mechanical properties and inertness toward chemicals, solvents, and staining agents
- Acrylic adhesive maintains high secure bonding under temperature variations from -100°F to 225°F
- Contains no plasticizers for superior long-term aging properties and durability
- Solvent resistant adhesive withstands jet fuel, hydraulic fluid, and lubricating oils
- Immediate adhesion upon contact with broad substrate compatibility
- Meets ASTM D3330, ASTM D3652, and ASTM D3759 specifications
- Tough and flexible across broad temperature ranges
- Ideal for aerospace, military, construction, and window/door applications
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Weather Resistant Film Tape 838 |
| Part Number | 838 |
| UPC Code | 00021200056840 |
| 3M Product Number | 838 |
| 3M ID | 7100028874 |
| Product Color | White |
| Overall Width | 1 inch (25.4 mm) |
| Overall Length | 72 yards (65.83 m) |
| Overall Thickness | 3.4 mil (0.09 mm) |
| Backing Material | Tedlar® PVF (Polyvinyl Fluoride) |
| Backing Thickness | 2.1 mil (0.05 mm) |
| Adhesive Type | Acrylic |
| Adhesive Thickness | 0.05 mm |
| Adhesion Strength | 47 oz/in (51 N/100mm) |
| Tensile Strength | 24 lb/in (42 N/100mm) |
| Elongation at Break | 170% |
| Minimum Operating Temperature | -100°F (-73°C) |
| Maximum Operating Temperature | 225°F (107°C) |
| Liner Color | White |
| Liner Material | Acrylic |
| Number of Adhesive Sides | Single-sided |
| Product Form | Roll |
| Smallest Saleable Unit | Roll |
| Units per Case | 36 rolls |
| Shelf Life | 18 months from date of manufacture |
| Application | Exterior Side Panel Bonding |
| Industries | Military & Government, Aerospace, Construction, Signage |
| Specifications Met | ASTM D3330, ASTM D3652, ASTM D3759 |
| Brand | 3M™ |
| Use Restriction | For industrial/occupational use only. Not for consumer sale or use. |
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