3M™ Polyester Tape 8991, Blue, 4 in x 72 yd, 2.4 mil, 8 Roll/Case

Effectively Mask in High Temperature Applications

3M™ Polyester Tape 8991 is a general purpose, thin, conformable polyester tape ideal for masking in high temperature applications. The translucent blue backing is tear resistant. Coated with a silicone adhesive, this tape functions well in masking for powder coating to provide sharp paint lines. It removes cleanly and in one-piece from most surfaces, avoiding slivering and breaking.

With good chemical resistance, this tape works effectively in chemical processes and demanding work conditions, such as anodizing. The pressure sensitive silicone adhesive performs under a broad range of temperatures ranging from -60°F (-50°C) to 400°F (204°C).

Recommended applications

Masking parts for high temperature powder coat painting Holding parts or vacuum bags during composite bonding operations Masking metal surfaces in acid or caustic chemical milling baths

Protective tape reduces scratches during handling and shipping

• Works in demanding conditions and high temperatures ranging from -60ºF (-50ºC) to 400ºF (204ºC)
• Clean removal during high-temperature masking operations such as powder coating
• Polyester film offers excellent thermal and chemical resistance while maintaining flexibility
• Silicone adhesive provides clean removal from a variety of surfaces
• Translucent blue backing provides easy identification and positioning