Professional aerospace-grade glass cloth tape with flame-retardant properties, 3-inch width, 36-yard length, 7-mil thickness, white color, 12 rolls per case, ideal for aircraft cargo bay panel sealing and thermal insulation applications.
3M™ Glass Cloth Tape 398FR is a premium aerospace-grade adhesive tape specifically engineered for demanding applications requiring superior flame retardancy and abrasion resistance. Featuring a durable white glass cloth backing with acrylic pressure-sensitive adhesive, this 3-inch by 36-yard roll delivers exceptional performance in thermal and acoustic insulation panel sealing. The tape's 7-mil thickness provides robust puncture resistance and high tensile strength while maintaining excellent conformability to curved and uneven surfaces.
This professional-grade tape is primarily designed for sealing aircraft cargo bay panels and meets stringent aerospace specifications including F.A.R. Part 25.853(a), F.A.R. Part 25.855(d), and Boeing material specifications BMS 5-146 Type I, Class I, Grade A. The acrylic adhesive formulation ensures excellent long-aging properties and maintains secure adhesion across an extended temperature range from -20°F to 250°F, making it ideal for permanent applications in challenging climate conditions. Available on a convenient skip-slit liner for ease of application, each case contains 12 rolls.
The tape's glass cloth backing provides superior abrasion and puncture resistance for extended service life in aerospace environments. The formulation is EU compliant per directive 2003/11/EC and does not contain antimony, meeting modern environmental standards. With a 24-month shelf life and rated for both indoor and outdoor use, this industrial-grade tape represents the ideal choice for critical sealing applications in aerospace, automotive, construction, and military applications where reliability and flame retardancy are paramount.
Key Features
- Durable glass cloth backing provides superior abrasion and puncture resistance for long-term aerospace applications
- Acrylic pressure-sensitive adhesive ensures excellent long-aging properties and secure permanent bonding
- Flame retardant properties meet F.A.R. 25.853(a), F.A.R. 25.855(d) and Boeing BMS 5-146 specifications
- Exceptional temperature resistance from -20°F to 250°F with high tensile strength of 2080 oz/in
- Skip-slit liner backing with blue polyethylene film for easy application and superior conformability to curved surfaces
- White glass cloth backing provides clean finished appearance and excellent visibility during installation
- EU compliant formulation without antimony meets modern environmental standards
- High conformability bonds over difficult textures, uneven surfaces and curved applications with ease
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Glass Cloth Tape 398FR |
| Part Number | 398FR |
| UPC Code | 00021200966736 |
| Overall Width (Imperial) | 3 inches |
| Overall Width (Metric) | 76.2 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 |
| Maximum Operating Temperature (Fahrenheit) | 250°F |
| Maximum Operating Temperature (Celsius) | 121°C |
| Minimum Operating Temperature (Fahrenheit) | -20°F |
| Minimum Operating Temperature (Celsius) | -29°C |
| Shelf Life | 24 months |
| Case Quantity | 12 rolls per case |
| Units per Case | 12.0 |
| Smallest Saleable Unit | Roll |
| Application | Splicing Flame-Retardant Tape |
| Indoor/Outdoor Rating | Indoor/Outdoor |
| Specifications Met | ASTM D3330, D3652, ASTM 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 |
| Regulatory Compliance | EU Directive 2003/11/EC, FAA Compliant |
| Antimony Content | Does not contain antimony |
| Liner Type | Skip-slit with blue polyethylene film |
| Brand | 3M™ |
| Industries | Aerospace, Automotive, Construction, General Industrial, Military & Government, Specialty Vehicles, Transportation |
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