3M 398FR (3-Inch-Roll)

Additional Product Information

3M 398FR is the industry-standard flame-retardant glass cloth tape trusted by MRO teams and aircraft engineers across the aviation industry. From advanced military jets to passenger airliners that carry millions of people each year, it ensures safe, compliant sealing, splicing and patching in critical areas like insulation blankets, panels and ducts. Its flame resistance, strength and proven 3M reliability make it a must-have for AOG situations where downtime isn’t an option. That’s why the world’s leading airlines, OEMs and ground crews all keep 3M 398FR in stock as a trusted go-to solution.

Key Technical Specs for 3M 398FR

• Type: Flame-retardant glass cloth tape with pressure-sensitive adhesive.
• Width: 3 in. (76.20mm).
• Backing: Glass cloth with a flame-retardant adhesive system.
• Temperature Resistance: Performs across a wide temperature range (commonly up to ~200°C / 392°F depending on application).
• Tensile Strength: High mechanical strength from the glass cloth backing, providing durability against abrasion and wear.
• Most Common Uses:
• Sealing and patching insulation blankets in fuselage and cargo bays.
• Splicing and repairing thermal/acoustic insulation panels.
• Bundling and securing wire harnesses, ducts and hoses.
• Applications requiring flame compliance and abrasion resistance in aircraft.

Approvals & Specifications for 3M 398FR

• Meets FAA flame resistance requirements for tapes used in insulation blanket and interior applications.
• Often referenced in Airbus and Boeing process specs for insulation blanket splicing and repair.
• May comply with BMS 5-133 (Boeing Material Spec for insulation blanket tapes) confirm with OEM cross-reference.

Typical Aircraft MRO / AOG Applications for 3M 398FR

• MRO teams use this tape for fast repairs to insulation blankets and panels during routine checks or unexpected findings.
• AOG: essential for sealing or splicing insulation on the spot, minimizing downtime.
• Ensures safety compliance by maintaining flame retardancy in repaired or spliced areas.
• Stocking 3M 398FR allows ground crew to respond immediately, avoiding delays from sourcing.

Compatibility & Safety Notes for 3M 398FR

• Compatible with fiberglass and other standard insulation materials used in commercial and military aircraft.
• Flame-retardant adhesive minimizes fire hazard risk.
• Clean, easy tear by hand but strong adhesion ensures secure placement.
• Does not add significant weight compared to metal fasteners or mechanical fixes.

Packaging & Procurement for 3M 398FR (matched to the Aerospheres page and common market packs)

• Unit: Roll format.
• Size: 3-inch (76.20mm) width × standard roll length (usually ~55m / 60yd).
• Supplied individually for direct use by MRO teams.

Why 3M 398FR is Chosen for AOG / MRO

• Quick, compliant and effective solution for urgent repairs.
• Lightweight, flame-retardant and strong enough for insulation blanket patching.
• Saves precious turnaround time. No curing, no mixing, no extended downtime.
• Standardized across fleets, reducing training and procurement complexity.

Practical Suggestions for Your Team (AOG mindset) for 3M 398FR

• Stock at least several rolls in AOG kits. Common across Boeing, Airbus and military platforms.
• Use for temporary or permanent fixes to insulation blankets while awaiting full maintenance windows.
• Always cross-check roll size (3 in / 76.20mm) to match spec before dispatch.
• Ensure storage in cool, dry environments to preserve adhesive performance.
• Train ground crew to apply cleanly and avoid contamination of surfaces for maximum adhesion.

Manufacture / Aviation Spec Codes for 3M 398FR

• Commonly referenced in Boeing Material Specification BMS 5-133 (insulation tapes).
• Airbus and Lockheed Martin may reference this tape under equivalent blanket splice/repair specs.
• FAA-compliant flame-retardant tape for interior applications.

Alternative Names & Descriptions for 3M 398FR

• 3M 398FR Flame Retardant Glass Cloth Tape
• 3M 398FR Aircraft Insulation Blanket Tape
• 3M 398FR FR Repair Tape
• Boeing BMS 5-133 Approved Tape
• Aerospace Glass Cloth Splicing Tape
• 398FR-3"
• 3M398FR_76MMX33M
• 398FR-3IN.
• SCOTCH398FR-76MM:D2607
• POLYKEN290FR-3
• 3M-398FR-3