Premium high-temperature polyester masking tape with silicone adhesive for demanding industrial applications, operating from -60°F to 425°F with chemical and thermal resistance.
3M™ Polyester Tape 8403 is a premium high-temperature masking tape engineered for demanding industrial applications requiring exceptional durability and chemical resistance. This translucent green polyester tape features a silicone adhesive that bonds exceptionally well to difficult surfaces, including silicone-coated papers, films, and anodized metals. The tape maintains its flexibility and adhesive properties across an impressive temperature range from -60°F (-50°C) to 425°F (218°C), making it ideal for aerospace, automotive, and composite manufacturing applications. The 2.4 mil thick backing provides superior durability compared to standard polyester tapes, ensuring longer wear life and consistent performance in harsh environments.
This versatile masking tape excels in multiple industrial applications including splicing operations on silicone liners and films, holding parts during composite bonding, masking metal surfaces in chemical milling baths, and serving as a flash breaker in metal bonding processes. The silicone adhesive removes cleanly in one piece from most surfaces without leaving residue, making it perfect for temporary masking applications. With exceptional chemical resistance to acid and caustic solutions, the tape performs reliably in some of the most demanding work conditions, including anodization processes. Each case contains 12 rolls of 72-yard length, providing ample supply for continuous production operations.
The tape meets several aerospace specifications and is specifically designed for industrial and occupational use. Its easily identifiable translucent green backing makes it simple to track during splicing and masking operations. Whether you're working on composite bonding, aerospace manufacturing, automotive applications, or general industrial masking, 3M™ Polyester Tape 8403 delivers reliable performance and consistent results in the most challenging environments.
Key Features
- Works in demanding conditions with temperature range from -60°F (-50°C) to 425°F (218°C)
- Silicone adhesive provides clean removal in one piece from various surfaces without residue
- Chemical resistant adhesive and polyester backing for durability in harsh environments
- Thicker 2.4 mil polyester backing provides superior durability and longer wear life
- Ideal for splicing, composite bonding, and masking applications on difficult-to-adhere surfaces
- Translucent green backing easily identifiable for tracking during splicing operations
- Meets multiple aerospace specifications and industry standards
- Excellent performance in anodization and metal bonding processes
- Retains flexibility in autoclave conditions for specialized applications
- Case of 12 rolls, 72 yards each for continuous production use
Technical Specifications
| Specification |
Value |
| Product Number | 3M 8403 |
| Part Number | 8403 |
| UPC Code | 00638060406120 |
| Overall Width (Imperial) | 4 inches |
| Overall Width (Metric) | 101.6 mm |
| Overall Length (Imperial) | 72 yards |
| Overall Length (Metric) | 75.836 meters |
| Backing Material | Polyester |
| Backing Thickness (Imperial) | 1.4 mil |
| Backing Thickness (Metric) | 0.04 mm |
| Adhesive Type | Silicone |
| Product Color | Translucent Green |
| Tensile Strength (Imperial) | 46 lb/in |
| Tensile Strength (Metric) | 71.8 N/100mm |
| Elongation at Break | 140% |
| Maximum Operating Temperature (Fahrenheit) | 425°F |
| Maximum Operating Temperature (Celsius) | 218°C |
| Minimum Operating Temperature (Fahrenheit) | -60°F |
| Minimum Operating Temperature (Celsius) | -50°C |
| Application Type | High Temperature Masking |
| Smallest Saleable Unit | Roll |
| Quantity per Case | 12 rolls |
| Specifications Met | ASTM D3330, ASTM D3652, ASTM D3759 |
| Brand | 3M™ |
| Suitable Industries | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Marine, Metalworking, Military & Government, Paper, Print, Specialty Vehicles, Transportation |
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