Premium 3.4 mil white weather-resistant film tape with Tedlar® PVF backing and acrylic adhesive, ideal for outdoor sealing and protection in extreme temperatures from -100°F to 225°F.
3M™ Weather Resistant Film Tape 838 is a premium industrial-grade adhesive tape designed for long-term outdoor exposure and protection applications. This white tape features a strong, thin Tedlar® PVF Film backing combined with a high-shear-strength, solvent-resistant acrylic adhesive. The 3.4 mil thickness provides optimal balance between strength and flexibility, making it ideal for building and construction, aerospace, signage, military, and window and door industries.
The tape's exceptional weather resistance and outstanding mechanical properties make it perfect for sealing seams of outdoor building panels, windows, doors, and critical areas from moisture intrusion. With a 2.1 mil Tedlar® PVF backing, this tape delivers increased strength without added bulk. The acrylic adhesive adheres immediately upon contact and maintains secure adhesion through climate and temperature variations. The product contains no plasticizers, contributing to excellent long-term aging properties and performance in extreme temperature ranges from -100°F to 225°F.
This industrial-occupational product meets ASTM D3330, ASTM D3652, and ASTM D3759 specifications, ensuring reliability and consistency. Available in a 24-roll case with 72-yard rolls per case, this tape is suitable for hinge seals on shower doors, exterior panel bonding, and applications requiring solvent resistance to jet engine fuel, hydraulic fluid, and lubricating oils.
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 to chemicals, solvents, and staining agents
- No plasticizers for superior long-term aging properties
- Tough and flexible performance across broad temperature range -100°F to 225°F
- High-shear-strength acrylic adhesive with immediate contact bonding
- Solvent resistant to jet engine fuel, hydraulic fluid, and lubricating oils
- Maintains adhesion through climate and temperature variations
Technical Specifications
| Specification |
Value |
| Product Type | Specialty Application Tape |
| Backing Material | Tedlar PVF Film |
| Adhesive Type | Acrylic |
| Overall Width | 1.5 inches (38.1 mm) |
| Overall Length | 72 yards (65.83 m) |
| Total Thickness | 3.4 mil (0.09 mm) |
| Backing Thickness | 2.1 mil (0.05 mm) |
| Adhesive Thickness | 0.05 mm |
| Product Color | White |
| 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) |
| Number of Adhesive Sides | Single-sided |
| Shelf Life | 18 months from date of manufacture |
| Units per Case | 24 rolls |
| Part Number | 838 |
| 3M Product Number | 838 |
| 3M ID | 7010045060 |
| UPC | 00021200056857 |
| Specifications Met | ASTM D3330, ASTM D3652, ASTM D3759 |
| Smallest Saleable Unit | Roll |
| Product Form | Roll |
| Application | Exterior Side Panel Bonding |
| Industries | Military & Government, Building & Construction, Aerospace, Signage, Window & Door |
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