Polyken® 345
Premium Self-Wound Foil Tape

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  • Aircraft sealing & masking
  • Window mask to protect aircraft canopies, windshields, and passenger window surfaces from crazign or hazing during paint stripping operations
  • Heavy duty vapor barrier sealing for sheet metal flexible, and fiberglass duct systems
  • Insulation seal, patch and repair


  • Heavy Duty Foil Backing
  • Acrylic Adhesive
  • Self Wound Construction


  • Provides a barrier to air, moisture and corrosion
  • Acts as a heat shield to minimize heat transfer
  • Conformable for irregular surfaces and controus
  • Excellent bond to most surfaces
  • Solvent resistant
  • Excellent high temperature performance
  • NO release liner minimizes waste


 Measurment US Value Metric Value Test Method
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Total Thickness 5.5 mils 139.7 mic  ASTM D-1000
Foil Thickness 3.0 mils 76.2 mic  ASTM D-1000
Adhesion to Steel 55 oz/in 6.02 N/cm PSTC-1
Tensile Strength 26 lb/in 45.53 N/cm ASTM D-1000
Operating Temperature 0 to 260°F -17 to 127°C

Recommended Storage Conditions: 40-60% Humidity, 60oF-80oF

Standard Shelf Life (at 25C): 36 months from date of manufacture.

Note: The above are typical values and should not be used in writing specifications