3M™ Polyester Film Filament Electrical Tape 1339 is a heavy-duty electrical tape combining a polyester film backing reinforced with continuous glass yarn filaments and an acrylic adhesive. Delivering exceptional tensile strength (275 lbs/in) and cut-through resistance, it is designed for anchoring heavy leads, banding motor coils, and resisting centrifugal forces.
Key Performance Highlights
- Continuous glass filament reinforcement delivers immense tensile strength (275 lbs/in)
- Non-corrosive acrylic adhesive resists flagging and solvent degradation
- Prevents wire shift and lead pull-out under centrifugal forces in rotating motor armatures
- UL Recognized Class 130°C component for heavy electrical machinery
Recommended Industrial Applications
Heavy-duty coil anchoring, banding motor coils, securing heavy lead wires, high mechanical shock holding
Authoritative Technical Specifications
| Backing Material | Polyester film reinforced with continuous glass yarn filaments |
|---|---|
| Adhesive System | High-shear acrylic pressure-sensitive adhesive |
| Total Thickness | 0.165 mm (6.5 mil) |
| Operating Temperature | Up to 130°C (266°F) · UL Class 130°C |
| Visual Color / Appearance | Translucent Off-White (Filament Reinforced) |
| Dielectric / Flame Rating | UL Recognized, File E17385 · 5,500 Volts dielectric breakdown |
| Precision Converting | Precision Rotary Slitting, Die-Cutting, Custom Widths from 2mm to Log Width |
