In aerospace manufacturing and maintenance, safety is everything. One often-overlooked component that plays a critical role in protecting aircraft, crew, and passengers is fire-retardant (FR) tape. Used across everything from wire harnessing to thermal insulation, these tapes are specially engineered to meet stringent safety, thermal, and flammability standards.
This blog takes an in-depth look at aerospace FR tapes—what they are, what specs they need to meet, and how they are used across various aerospace applications.
What Is Aerospace FR Tape?
Aerospace FR tape refers to pressure-sensitive adhesive tapes that are fire retardant, designed to self-extinguish and resist flame propagation. These tapes are essential in environments where extreme heat, electrical insulation, and flammability prevention are critical.
Unlike general-purpose tapes, FR tapes used in aerospace must meet strict compliance standards for flame, smoke, and toxicity (FST).
What Do Aerospace Buyers Look For in FR Tape?
Aerospace engineers, MRO teams, and procurement departments look for specific qualities when sourcing FR tape:
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Flame Retardancy – Must self-extinguish and not support combustion.
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Low Smoke Emission – Essential for passenger cabin use.
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Low Toxic Gas Emission – Non-halogenated materials are preferred.
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Thermal Resistance – Must perform under extreme hot and cold conditions.
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Lightweight Construction – Every ounce matters in aerospace.
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Conformability and Flexibility – For wrapping cables and uneven surfaces.
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Clean Removal – Important for temporary masking or repairs.
Common Specifications and Certifications
To be considered suitable for aerospace use, FR tapes often need to comply with some or all of the following:
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FAR 25.853 – The Federal Aviation Regulation for flame resistance of materials used in aircraft interiors.
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Boeing BMS standards – Boeing Material Specifications such as BMS 5-146 or BMS 5-133.
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Airbus ABS standards – Airbus has specific standards for materials used in aircraft interiors.
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MIL Spec (Military Specifications) – For defense aerospace use, such as MIL-I-46058C.
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UL 94 V-0 or VTM-0 – Flammability ratings for plastic and adhesive materials.
Meeting these certifications ensures the tape can be used in cockpit interiors, cable harnesses, insulation systems, and structural bonding applications.
Materials Commonly Used in Aerospace FR Tapes
Different base materials are used depending on the tape's application:
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Polyimide Film (e.g., Kapton®) – High-temperature and chemical resistance.
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Glass Cloth – Reinforced strength for thermal insulation and flame shielding.
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Foil Tapes (Aluminum or Copper) – Used for EMI shielding and heat reflection.
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PTFE (Teflon®) Coated Tapes – Low friction, chemical resistant, and flame retardant.
Adhesives are also specially formulated:
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Silicone Adhesives – For extreme high/low temperature ranges.
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Acrylic Adhesives – Offer balance of adhesion and environmental resistance.
Common Aerospace Applications for FR Tape
1. Wire and Cable Harnessing
FR tapes are used to bundle and protect cables in cockpit panels, avionics, and undercarriage systems. Tapes like Polyken 108FR or 3M 398FR are used for their flame retardancy and clean removability.
2. Insulation and Duct Sealing
In aircraft HVAC and insulation systems, FR tapes help seal thermal blankets and ductwork, maintaining cabin temperature and preventing fire spread.
3. Temporary Surface Protection
During assembly or MRO work, FR tapes are applied to protect surfaces from heat, abrasion, or fire risks without leaving residue.
4. Composite Lay-Up and Masking
FR tapes help in the lay-up of composite materials or as masking during heat curing processes in part manufacturing.
5. EMI/RFI Shielding
Aluminum or copper foil FR tapes are used to shield electronic components from electromagnetic or radio frequency interference.
Example: Polyken® 108FR
One of the most well-known aerospace FR tapes is Polyken 108FR, used widely in commercial and military aircraft.
Features:
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Meets FAR 25.853 requirements
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Excellent adhesion to metal and insulation blankets
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Hand-tearable for ease of use
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Residue-free removal
Common Uses:
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Wire harness wrapping
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Sealing insulation blankets in fuselage
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Temporary holding during cabin refits
Best Practices for Choosing FR Tapes in Aerospace
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Verify Certification Requirements: Always match the tape to OEM specs (Boeing, Airbus, MIL-SPEC).
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Test for Adhesion and Compatibility: Especially if used on composite materials or insulation.
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Match Temperature Range: Ensure the tape will hold under flight or maintenance conditions.
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Consider Application Method: Some tapes are better for hand use; others are machine-applied.
Final Thoughts
Aerospace fire-retardant tapes are mission-critical materials designed to protect aircraft systems and personnel. By choosing tapes that meet required specs and are designed for harsh environments, aerospace teams can ensure regulatory compliance and long-term durability.
If you’re sourcing FR tape for aviation or aerospace, be sure to review the product’s data sheet, certifications, and application history.
Need help choosing the right tape? Contact us for technical guidance and compliant aerospace tape options.