Premium polyester masking tape with silicone adhesive for high-temperature applications up to 425°F, featuring clean removal and chemical resistance for aerospace, automotive, and industrial use.
3M™ Polyester Tape 8403 is a premium high-temperature masking and splicing tape engineered for demanding industrial applications. This translucent green polyester tape features a silicone adhesive that provides exceptional bonding performance on difficult surfaces including silicone-coated papers, films, and composite materials. The tape delivers superior chemical resistance and maintains flexibility across an extreme temperature range from -60°F (-50°C) to 425°F (218°C), making it ideal for aerospace, automotive, and metalworking applications.
Designed as a thicker, more durable version of the 3M Polyester Tape 8402, this 2-inch wide tape excels in high-temperature bake cycles, anodization processes, and composite bonding operations. The silicone adhesive ensures clean, one-piece removal from most surfaces without residue, while the chemical-resistant backing provides long-term durability in harsh environments including acid and caustic chemical milling baths. Each case contains 24 rolls of 72-yard length tape with 2.4 mil thickness, offering excellent value for industrial operations.
The tape meets multiple aerospace specifications and is engineered for permanent splicing, flash-breaker applications in metal bonding, protective surface coverage during handling and shipping, and paint masking in high-temperature applications. Its translucent green backing is easily identifiable for splicing applications, and the pressure-sensitive formulation ensures firm adhesion while remaining flexible throughout its service life. Ideal for industries including aerospace, appliance manufacturing, automotive, construction, electronics, metalworking, and military applications.
Key Features
- Extreme temperature range from -60°F to 425°F with maintained flexibility
- Silicone adhesive provides clean, one-piece removal without residue
- Chemical resistant backing for durability in harsh environments
- Ideal for anodization, composite bonding, and splicing applications
- Easily identifiable translucent green backing for splice applications
- Thicker, more durable than 3M Polyester Tape 8402
- Meets multiple aerospace specifications and standards
- Superior bonding on difficult surfaces like silicone-coated papers and films
- Pressure-sensitive adhesive maintains firm adhesion and flexibility
- Suitable for high-temperature bake cycles and paint masking
Technical Specifications
| Specification |
Value |
| Product Number | 8403 |
| Backing Material | Polyester |
| Adhesive Type | Silicone |
| Product Color | Translucent Green |
| Overall Width (Imperial) | 2 inches |
| Overall Width (Metric) | 50.8 millimeters |
| Overall Length (Imperial) | 72 yards |
| Overall Length (Metric) | 65.8 meters |
| Backing Thickness (Metric) | 0.04 millimeters |
| Backing Thickness (Imperial) | 1.4 inches |
| Tape Thickness | 2.4 mils |
| Tensile Strength (Imperial) | 46 pounds per inch |
| Tensile Strength (Metric) | 71.8 Newtons per 100mm |
| Elongation at Break | 140 percent |
| 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 | 24 rolls |
| Smallest Saleable Unit | Roll |
| Specifications Met | ASTM D3330, ASTM D3652, ASTM D3759 |
| Brand | 3M™ |
| UPC | 00021200614606 |
| 3M ID | 7000001173 |
| Application | High Temperature Masking |
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