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  5. 3M™ Polyester Tape 8991

3M™ Polyester Tape 8991

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  • Works in demanding conditions and high temperatures ranging from -6°F (-5°C) to 4°F (24°C)
  • Clean removal during high-temperature applications including powdercoat masking, flashbreaker, and bag sealing applications
  • Polyester film offers excellent thermal and chemical resistance while maintaining flexibility
  • Silicone adhesive provides clean removal from a variety of surfaces
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    Overall Length (Imperial)
    Overall Width (Metric)
    Overall Length (Metric)
  • 3M™ Polyester Tape, 8991, blue, 1.0 in x 72.0 yd x 2.4 mil (2.5 cm x 65.8 m x 0.1 mm)
    Overall Width (Imperial)
    1 in
    Overall Length (Imperial)
    72 yd
    Overall Width (Metric)
    2.5 cm
    Overall Length (Metric)
    65.8 m
  • 3M™ Polyester Tape, 8991, blue, 2.0 in x 72.0 yd x 2.4 mil (5.1 cm x 65.8 m x 0.1 mm)
    Overall Width (Imperial)
    2 in
    Overall Length (Imperial)
    72 yd
    Overall Width (Metric)
    5.1 cm
    Overall Length (Metric)
    65.8 m
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Specifications
Adhesive Type
Silicone
Applications
Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Metalworking, Military and Government, Specialty Vehicle, Transportation
Brand
3M™
Elongation at Break
100 %
Industries
Appliance, Automotive, Construction, Electronics, General Industrial, Military and Government, Print, Specialty Vehicle, Transportation
Maximum Operating Temperature (Celsius)
204 °C
Maximum Operating Temperature (Fahrenheit)
400 °F
Product Colour
Blue
Tensile Strength (Imperial)
29 lb/in
Tensile Strength (metric)
50.8 N/100mm, 508 N/100mm
Total Tape Thickness without Liner (Imperial)
2.4 mil
Total Tape Thickness without Liner (metric)
0.061 mm
Units per Case
24 Roll, 36 Roll
Details
  • Works in demanding conditions and high temperatures ranging from -6°F (-5°C) to 4°F (24°C)
  • Clean removal during high-temperature applications including powdercoat masking, flashbreaker, and bag sealing applications
  • 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
  • Waterproof and easily removable

Thin and conformable, 3M™ Polyester Tape 8991 is a general purpose tape that excels in high temperature masking operations such as powder coat painting. Coated with a silicone adhesive, this tape bonds to a variety of difficult surfaces. It is chemical resistant and performs under a wide range of temperatures and environments.

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. dispensable and appropriate for outdoor use.

Suggested Applications

  • Masking in e-coating, electroplating and anodizing
  • Masking for powdercoat painting
  • Flashbreaker tape when pulling through cured coating such as epoxies
  • Holding material, securing parts and sealing of vacuum bags during autoclave processes
  • Splicing, tabbing and roll closing difficult-to-stick surfaces such as silicone treated liners