Premium flame retardant polyurethane protective tape for aircraft lavatory and galley seam sealing with dual liners, exceptional corrosion protection, and FAR 25.853 certification.
3M™ Polyurethane Protective Tape 8658DL is a premium flame retardant seam sealing tape engineered specifically for aircraft interior applications requiring exceptional corrosion protection. This rugged 9 mil protective tape is composed of a thermoplastic polyurethane elastomer, rubber-based pressure-sensitive adhesive, and dual liners designed to provide up to 90% corrosion reduction when used as part of the complete 3M Aircraft Corrosion Prevention System. The tape is specifically formulated for wet area protection in aircraft lavatory and galley applications where fluid barrier protection is critical.
The innovative dual liner system features a 3 mil polyethylene protective liner that shields the adhesive from contamination prior to application, while the top liner is imprinted with black lines at 4-inch intervals to ensure precise installation alignment. The transparent formulation allows for final validation of proper screw and sealant installation, while the conformable nature of the polyurethane elastomer enables seamless application over curved and uneven surfaces. This tape meets the rigorous FAR 25.853 (a) aircraft interior burn certification requirements and is qualified to leading OEM specifications for moisture barriers.
The pressure-sensitive acrylic adhesive provides a firm, lasting bond that maintains strength across a wide range of climate and temperature variations. The polyurethane elastomer backing offers exceptional resistance to abrasion, erosion, scratching, punctures, and impact damage, while remaining solvent resistant and adhering excellently to composite materials. With zero added VOCs and proven performance in demanding aerospace environments, this protective tape delivers professional-grade corrosion protection and installation reliability for critical aircraft maintenance and monument installation applications.
Key Features
- Flame resistant - meets 14 CFR 25.853 (a) for aircraft interior burn certifications
- Dual liner system - 3 mil polyethylene protective liner and top liner with 4-inch interval markings for precise installation
- Thermoplastic polyurethane elastomer - abrasion, scratch, erosion, corrosion, tear and puncture resistant
- Excellent fluid barrier - ideal for seam sealing in floor panels, lavatory and galley applications
- Conformable design - easy to apply over curved and uneven surfaces with professional results
- Pressure-sensitive acrylic adhesive - maintains bond strength across temperature and climate variations
- Transparent formulation - allows validation of screw and sealant installation
- Zero VOC content - environmentally responsible aerospace solution
- Up to 90% corrosion reduction - when used with complete 3M Aircraft Corrosion Prevention System
- OEM qualified - meets leading aerospace specifications for moisture barrier protection
Technical Specifications
| Specification |
Value |
| Product Number | 8658DL |
| 3M ID | 7100012234 |
| Backing Material | Thermoplastic Polyurethane Elastomer |
| Adhesive Type | Pressure-sensitive Acrylic |
| Product Color | Transparent |
| Overall Thickness | 9 mil (0.229 mm) |
| Backing Thickness | 6 mil (0.15 mm) |
| Maximum Operating Temperature | 82°C (180°F) |
| Minimum Operating Temperature | -40°C (-40°F) |
| Minimum Installation Temperature | 15°C (60°F) |
| Dual Liner System | 3 mil polyethylene protective liner with 4-inch interval markings |
| Application | Corrosion Protection, Aircraft Galleys, Lavatory Sealing |
| Flame Resistance | Meets FAR 25.853 (a) Aircraft Interior Burn Certification |
| VOC Content | Zero Added VOCs |
| Case Quantity | 1.0 |
| Brand | 3M™ |
| Corrosion Reduction | Up to 90% when used with complete 3M Aircraft Corrosion Prevention System |
| Surface Compatibility | Composite materials, aircraft floor panels, aluminum surfaces |
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