3M™ Polyester Tape 8402 is a green 1.9 mil (0.05 mm) polyester film tape with green pigmented silicone adhesive for composite bonding and splicing of many silicone coated papers and films. The tape is chemical and thermal resistant, making it well-suited for use in splicing or masking.
Abrasion, chemical and thermal resistant
Works in demanding conditions and retains flexibility from -60°F (-50°C) to 350°F (176°C)
3M™ Polyester Tape 8402, is ideal for masking in high temperature applications and adheres well to silicone coated surfaces. The green color and silicone adhesive make for easier identification and application when splicing silicone treated paper.
Masking edges of overlap seams in metal bonding process where the excess epoxy (flash) flows on the tape
Protective tape reduces scratches during handling prior to bonding operations
Holding of parts or vacuum bags during bonding operation
Maskant for metal in acid or caustic chemical milling baths
Paint mask for areas subject to higher temperature bake cycles
Splicing of silicone liners and papers
Splicing of films subject to high temperatures
This tape functions well as a masking tape or in splicing operations, such as splicing of silicone liners and papers and films subject to high temperatures. Regardless of the application, cleanup is simple; just remove the tape and the cleanup is complete. This clean removing, high strength tape helps save time and keeps operations running smoothly.
Clean Application and Removal
One of the main reasons why this product is known and trusted for use in so many industries is because of its broad temperature compatibility. When put to the test, this tape continues to work effectively in some of the most demanding work conditions. The pressure sensitive silicone adhesive is ideal for high temperatures up to 400°F (204°C) with clean removal during high-temperature masking operations. This product can also be used in temperatures as low as -60°F (-50°C). This represents superior heat resistance when compared with acrylic adhesives. Our 3M™ Polyester Tape 8402 has long service life and is designed to remain firmly adhered and flexible.
Adhesion Strength (metric)
Splicing Silicone Treated Papers, Butt Splicing and Core Starting
Backing Thickness (metric)
Transportation, Specialty Vehicle, Construction, Automotive, Military & Government, General Industrial, Appliance, Electronics, Print