3M™ Heavy Duty Protective Tape 346
3M™ Heavy Duty Protective Tape 346 is a natural-colored, flat-stock paper tape engineered for demanding indoor and outdoor protection jobs. Its heavy flat-stock backing resists abrasion and moisture and filters UV rays. The rubber adhesive is stain- and transfer-resistant and ages well, so the tape can remain in place for up to six months and still come off cleanly in most conditions.
Applications include: Boat deck and cabin interior protection during construction, finishing, and refurbishing; steel tank protection during fabrication and welding; aircraft parts and surfaces protection during maintenance, storage, and shipping; indoor and outdoor protection of metals and plastics; protection of materials in transit against abrasion (e.g., outdoor motors)
- Abrasion and moisture resistant backing
- Filters UV rays
- Stain and transfer resistant adhesive
- Long aging for extended use
- Clean removal up to 6 months
| Property | Specification |
| Adhesive Material | Rubber |
| Backing (Carrier) Material | Flat stock paper |
| Total Thickness (Imperial) | 16.7 mil |
| Total Thickness (Metric) | 0.42 mm |
| Backing (Carrier) Thickness (Imperial) | 15 mil |
| Backing (Carrier) Thickness (Metric) | 0.38 mm |
| Adhesion to Steel (N/cm) | 2.4 |
| Adhesion to Steel (oz/in) | 21.93 |
| Adhesion Test Method | ASTM D3330 |
| Tensile Strength (N/cm) | 49 |
| Tensile Strength (lb/in) | 28 |
| Elongation at Break | 4% |
| Product Color | Tan |
| Maximum Operating Temperature (Celsius) | 38 °C |
| Maximum Operating Temperature (Fahrenheit) | 100 °F |
| Minimum Operating Temperature (Celsius) | 16 °C |
| Minimum Operating Temperature (Fahrenheit) | 60 °C |
| Adhesive Thickness (mm) | 0.0400 |
| Standard Roll Length (m) | 55 |
