3M 8657DL
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other
Main features
- Dual-Liner Aircraft Wet-Area Installation
- Tough Polyurethane Fluid-Barrier Protection
- 82 deg C Wet-Area Service
Product Description
3M Polyurethane Protective Tape 8657DL is a flame-retardant dual-liner polyurethane protective tape for wet-area corrosion prevention in aircraft interiors. The tough polyurethane elastomer resists puncture, tearing, abrasion, and scratching, while the pressure-sensitive adhesive provides straightforward attachment over aircraft floor panels. A 3 mil polyethylene bottom liner protects the adhesive before application, and a 2 mil polyester top liner serves as an installation aid before final removal. Installed over floor panels and adjoining walls, the tape forms a fluid barrier for areas such as lavatories and galleys. Its approximate applied thickness is 0.46 mm, with a maximum service temperature of 82 deg C.
Key features
- Dual-liner installation control: The 3 mil polyethylene bottom liner and 2 mil polyester top liner protect the adhesive and aid controlled installation.
- Tough polyurethane fluid barrier: The flame-retardant polyurethane elastomer resists puncture, tearing, abrasion, and scratching in aircraft wet areas.
- Wet-area service capability: The installed tape forms a fluid barrier over floor panels and has a maximum service temperature of 82 deg C.
Applications
Use 3M Polyurethane Protective Tape 8657DL over aircraft floor panels and adjoining walls in wet areas such as lavatories and galleys to limit fluid exposure to the floor system.
TDS, SDS & Technical Documents
Technical Specifications
Mechanical Properties
Thermal Properties
General Properties
Additional Information
As-supplied / before-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Backing | Polyurethane elastomer | Flame-retardant tape construction | |
| Adhesive | Pressure-sensitive adhesive | Product construction | |
| Bottom liner thickness | 3 | mil | Polyethylene liner |
| Top liner thickness | 2 | mil | Polyester application-aid liner |
| Tensile strength | 88 | lb/in | Typical; 1540 N/100 mm; ASTM D882 Method A |
| Elongation at break | 600 | % | Typical; ASTM D882 Method A |
| Hardness | 90 | Shore A | Typical; ASTM D2240 |
| Shelf life | 2 | years | From date of manufacture; stored clean, dry, and out of direct sunlight |
After-processing / final-state properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Approximate applied thickness | 0.018 | in | 0.46 mm; liner excluded |
| Peel adhesion to bare aluminum | 35 | oz/in | Typical; 38 N/100 mm; ASTM D3330 180 deg peel; 24 hr dwell on 2024-T3 aluminum |
| Peel adhesion to BMS 4-17 Type VI floor panel | 19 | oz/in | Typical; 21 N/100 mm; ASTM D3330 180 deg peel; 24 hr dwell |
| Peel adhesion to BMS 4-20 Type II floor panel | 23 | oz/in | Typical; 25 N/100 mm; ASTM D3330 180 deg peel; 24 hr dwell |
| Maximum service temperature | 180 | deg F | 82 deg C |
