Premium silicone adhesive polyester tape for high-temperature masking and splicing with clean removal, chemical resistance, and aerospace-grade durability in extreme conditions.
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 pressure-sensitive silicone adhesive that provides exceptional bond strength on difficult-to-adhere surfaces, including silicone-coated papers and films. The tape maintains flexibility and adhesive performance 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.
Designed as a thicker, more durable version of the 3M™ Polyester Tape 8402, the 8403 offers superior durability and longer service life in high-stress environments. The silicone adhesive formulation ensures clean, one-piece removal from most surfaces without residue, making it perfect for temporary masking applications. The tape's chemical-resistant backing provides exceptional durability in harsh environments such as anodization processes, acid baths, and caustic chemical milling operations.
This industrial-grade tape meets multiple aerospace specifications and is engineered for professional use in composite bonding, metal surface masking, flash breaker applications, and protective wrapping during handling and shipping. The 12-inch width and 144-yard length provide substantial coverage for production environments, with each roll packaged individually for convenience and inventory management.
Key Features
- Silicone adhesive provides clean one-piece removal from most surfaces without residue
- Operates reliably from -60°F to 425°F (-50°C to 218°C) for demanding temperature environments
- Chemical-resistant polyester backing withstands anodization, acid baths, and caustic processes
- Translucent green color enables easy identification for splicing and masking applications
- Thicker, more durable formulation than 8402 model for extended service life and durability
- Meets aerospace specifications including ASTM D3330, D3652, and D3759 standards
- Excellent adhesion to difficult surfaces including silicone-coated papers and films
- 140% elongation at break provides flexibility and conformability during application
Technical Specifications
| Specification |
Value |
| Product Number | 8403 |
| Backing Material | Polyester |
| Adhesive Type | Silicone |
| Product Color | Translucent Green |
| Overall Width (Imperial) | 12 inches |
| Overall Width (Metric) | 304.8 mm |
| Overall Length (Imperial) | 144 yards |
| Overall Length (Metric) | 131.67 meters |
| Backing Thickness (Metric) | 0.04 mm |
| Backing Thickness (Imperial) | 1.4 mil |
| 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 |
| Specifications Met | ASTM D3330, ASTM D3652, ASTM D3759 |
| Units per Case | 1 Roll |
| Smallest Saleable Unit | Roll |
| UPC | 00021200387180 |
| 3M ID | 7010333758 |
| Applications | High Temperature Masking, Splicing, Composite Bonding, Chemical Milling |
| Industries | Aerospace, Automotive, Electronics, Construction, Manufacturing, Metalworking, Military, Marine, Transportation |
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