| Product Name | 3M Glass Cloth Tape 398FR |
| Part Number | 398FR |
| UPC | 00021200966712 |
| Overall Width (Imperial) | 6 inches |
| Overall Width (Metric) | 152.4 mm |
| Overall Length (Imperial) | 36 yards |
| Overall Length (Metric) | 32.9 meters |
| Total Tape Thickness (Imperial) | 7 mil |
| Total Tape Thickness (Metric) | 0.18 mm |
| Backing Material | Glass Cloth |
| Backing Thickness (Imperial) | 5 mil |
| Backing Thickness (Metric) | 0.13 mm |
| Adhesive Type | Acrylic Pressure-Sensitive |
| Adhesive Thickness (Imperial) | 2 mil |
| Adhesive Thickness (Metric) | 0.05 mm |
| Product Color | White |
| Tensile Strength (Imperial) | 2080 oz/in |
| Tensile Strength (Metric) | 227.7 N/100mm |
| Elongation at Break | 7% |
| Core Size (Imperial) | 3 inches |
| Core Size (Metric) | 7.62 cm |
| Minimum Operating Temperature (Fahrenheit) | -20°F |
| Minimum Operating Temperature (Celsius) | -29°C |
| Maximum Operating Temperature (Fahrenheit) | 250°F |
| Maximum Operating Temperature (Celsius) | 121°C |
| Shelf Life | 24 months |
| Units per Case | 8 rolls |
| Smallest Saleable Unit | Roll |
| Liner Type | Skip-slit with blue polyethylene film |
| Flame Retardant Specifications | FAR 25.853(a), FAR 25.855(d), MIL A-3316C 3 13.1 and 3 13.2 |
| Material Specifications | Boeing BMS 5-146 Type I, Class I, Grade A |
| Standards Compliance | ASTM D3330, D3652, D3758 |
| EU Compliance | Directive 2003/11/EC, Compliant with penta-BDE and octa-BDE restrictions |
| Antimony Content | Formulation does not contain antimony |
| Indoor/Outdoor Rating | Indoor/Outdoor |
| Primary Applications | Aircraft cargo bay panel sealing, thermal and acoustic insulation |
| Industries | Aerospace, Automotive, Construction, General Industrial, Military & Government, Specialty Vehicles, Transportation |
| Brand | 3M |