Premium industrial polyester masking tape with silicone adhesive for high-temperature applications up 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 challenging surface conditions. This translucent green polyester tape features a pressure-sensitive silicone adhesive that provides exceptional performance in extreme environments ranging from -60°F (-50°C) to 425°F (218°C). The tape excels in aerospace, automotive, and composite manufacturing applications where durability and reliability are critical. With a thickness of 2.4 mil and dimensions of 12 inches wide by 72 yards long, each case contains 4 rolls of ready-to-use tape.
The silicone adhesive formulation ensures clean, one-piece removal from most surfaces without leaving residue or causing surface damage. This makes it ideal for masking metal surfaces during anodization, acid etching, and caustic chemical milling processes. The tape's chemical-resistant backing provides superior durability in difficult industrial environments, maintaining flexibility and adhesion even in autoclave conditions. Its distinctive green color makes it easily identifiable for splicing applications, reducing confusion and improving workflow efficiency on job sites.
Designed as a thicker, more durable version of the 3M™ Polyester Tape 8402, this professional-grade tape is specifically formulated for splicing silicone-coated papers, films, and liners. The tape meets several aerospace specifications and ASTM standards including ASTM D3330, ASTM D3652, and ASTM D3759, ensuring compliance with strict industry requirements. Whether used for composite bonding operations, holding vacuum bags, protective surface coverage during shipping, or as a flash breaker in metal bonding processes, this tape delivers consistent, reliable performance that industrial professionals depend on.
Key Features
- Works reliably in demanding conditions with temperature range from -60°F to 425°F
- Silicone adhesive provides clean, one-piece removal without residue from most surfaces
- Chemical resistant backing ensures durability in anodization and caustic environments
- Translucent green color for easy identification in splicing and masking applications
- Thicker 2.4 mil polyester backing provides enhanced durability and longer wear life
- Maintains flexibility in autoclave conditions and extreme temperature environments
- Ideal for silicone-coated papers, films, and difficult-to-adhere surfaces
- Meets aerospace specifications ASTM D3330, ASTM D3652, and ASTM D3759
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Polyester Tape 8403 |
| Part Number | 8403 |
| UPC Code | 00021200302923 |
| 3M ID | 7000050147 |
| Overall Width (Imperial) | 12 inches |
| Overall Width (Metric) | 304.8 mm |
| Overall Length (Imperial) | 72 yards |
| Overall Length (Metric) | 65.83 meters |
| Backing Material | Polyester |
| Backing Thickness (Metric) | 0.04 mm (2.4 mil) |
| Backing Thickness (Imperial) | 1.4 inches |
| 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 |
| Units per Case | 4 rolls |
| Smallest Saleable Unit | Roll |
| Brand | 3M™ |
| Application | High Temperature Masking |
| Specifications Met | ASTM D3330, ASTM D3652, ASTM D3759 |
| Industries | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Marine, Metalworking, Military & Government, Paper, Print, Specialty Vehicles, Transportation |
| Use Type | Industrial/Occupational Use Only |
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