Premium industrial polyester masking tape with silicone adhesive for high-temperature applications. Operates from -60°F to 425°F, ideal for aerospace, automotive, and composite bonding with clean removal and chemical resistance.
3M™ Polyester Tape 8403 is a premium industrial-grade masking tape engineered for demanding high-temperature applications and difficult surface adhesion. This translucent green polyester tape features a pressure-sensitive silicone adhesive that bonds exceptionally well to challenging surfaces including silicone-coated papers, films, and anodized metals. The tape performs reliably across an extreme temperature range from -60°F (-50°C) to 425°F (218°C), making it ideal for aerospace, automotive, and composite manufacturing applications.
Designed as a thicker, more durable version of the 3M™ Polyester Tape 8402, this 2.4 mil thick tape offers superior durability and extended wear life in the most demanding work environments. The silicone adhesive provides clean, one-piece removal from most surfaces without residue, making it perfect for precision masking operations. With exceptional chemical resistance, this tape excels in harsh industrial conditions such as anodization, acid baths, and caustic chemical milling processes.
Each case contains 36 rolls of 1-inch wide by 72-yard length tape, providing ample supply for production environments. The tape meets several aerospace specifications and has been engineered to remain firmly adhered while maintaining flexibility even in autoclave conditions. Whether used for splicing operations, composite bonding, or temporary holding during manufacturing processes, 3M™ Polyester Tape 8403 delivers consistent performance and reliability in the most challenging industrial applications.
Key Features
- Operates in extreme temperature range from -60°F to 425°F with maintained flexibility
- Silicone adhesive provides clean one-piece removal without residue from most surfaces
- Chemical resistant backing and adhesive for durability in acid baths and anodization
- Translucent green backing for easy identification in splicing and masking applications
- Thicker 2.4 mil polyester construction provides superior durability and extended wear life
- Meets aerospace specifications and performs reliably in autoclave conditions
- Ideal for difficult-to-adhere surfaces including silicone-coated papers and films
- 140% elongation at break for flexibility and conformability on complex shapes
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Polyester Tape 8403 |
| Part Number | 8403 |
| UPC Code | 00021200325632 |
| Width (Imperial) | 1 inch |
| Width (Metric) | 25.4 mm |
| Length (Imperial) | 72 yards |
| Length (Metric) | 65.8 meters |
| Backing Material | Polyester |
| Backing Thickness | 2.4 mil (0.061 mm) |
| Adhesive Type | Silicone Pressure-Sensitive |
| Product Color | Translucent Green |
| Tensile Strength (Imperial) | 46 lb/in |
| Tensile Strength (Metric) | 71.8 N/100mm |
| Elongation at Break | 140% |
| Minimum Operating Temperature (Fahrenheit) | -60°F |
| Minimum Operating Temperature (Celsius) | -50°C |
| Maximum Operating Temperature (Fahrenheit) | 425°F |
| Maximum Operating Temperature (Celsius) | 218°C |
| Units per Case | 36 rolls |
| Smallest Saleable Unit | Roll |
| Specifications Met | ASTM D3330, ASTM D3652, ASTM D3759 |
| Industries Served | Aerospace, Automotive, Electronics, Composites, Metalworking, General Industrial |
| Application Type | High Temperature Masking, Splicing, Composite Bonding |
| Use Restriction | For industrial/occupational use only. Not for consumer sale or use. |
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