| Product Name | 3M™ Glass Cloth Tape 398FR |
| Part Number | 398FR |
| 3M Product ID | 7100132916 |
| Backing Material | Glass Cloth |
| Product Color | White |
| Total Tape Thickness without Liner | 7 mil (0.18 mm) |
| Backing Thickness | 5 mil (0.13 mm) |
| Adhesive Thickness | 2 mil (0.05 mm) |
| Adhesive Type | Acrylic, Pressure-Sensitive |
| Overall Length | 36 yards (32.9 meters) |
| Core Size | 3 inches (7.62 cm) |
| Tensile Strength | 2080 oz/in (227.7 N/100mm) |
| Elongation at Break | 7% |
| Maximum Operating Temperature | 250°F (121°C) |
| Minimum Operating Temperature | -20°F (-29°C) |
| Temperature Range | -20°F to 250°F (-29°C to 121°C) |
| Shelf Life | 24 months |
| Smallest Saleable Unit | Roll |
| Liner Type | Skip-slit with blue polyethylene film |
| Application Type | Splicing, Flame-Retardant Tape |
| Indoor/Outdoor Rating | Indoor/Outdoor |
| Specifications Met | ASTM D3330, D3652, D3758, F.A.R. 25.853(a), F.A.R. 25.855(d), MIL A-3316C, Boeing BMS 5-146 Type I, Class I, Grade A |
| Flame Retardant Standards | F.A.R. Part 25.853(a), F.A.R. Part 25.855(d), MIL A-3316C 3 13.1 and 3 13.2 |
| EU Compliance | Directive 2003/11/EC (Penta-BDE and Octa-BDE Restriction) |
| Antimony Content | Antimony-free formulation |
| Primary Applications | Aircraft cargo bay sealing, thermal and acoustic insulation panel sealing |
| Industries | Aerospace, Automotive, Construction, General Industrial, Military & Government, Specialty Vehicles, Transportation |
| Use Type | Industrial/Occupational use only - Not for consumer sale or use |