POLYKEN 360-17 FOILMASTIC Printed UL-181-FX Foil/Butyl Sealant Tape

POLYKEN 360-17 FOILMASTIC Printed UL-181-FX Foil/Butyl Sealant Tape

Polyken 360-17 is a mastic foil/butyl tape with a permanent butyl adhesive sealant. Acceptable for use on galvanized materials. Heavy duty all weather foil coated butyl mastic. Excellent adhesion to all surfaces. 2 mil dead soft aluminum backing. Extremely conformable. Provides instant water tight bond. Non-staining adhesives. Paintable - use in place of caulking. Excellent resistance to cold, heat, water, and sunlight. Printed for easy identification.


  • Indoor or outdoor sealing of low, medium & high pressure HVAC duct systems (includes: metallic and non-metallic duct, fiberglass duct & flexible duct systems).
  • Seal cracks and seams in gutters, roof alleys, eaves, hips and ridges.
  • Seal around chimneys and vent stacks.
  • Repair gouges, rips, tears in metal panels of trailers, shipping containers and metal buildings.
  • Mobile home repair.


  • Provides permanent water and air-tight seal.
  • Resistant to moisture and solvents.
  • Performs up to 10" w.g. pressure classes and to seal classes A, B, and C*
  • Consistent thickness, no messy clean-up.
  • Repositionable for several minutes for easy install.

Available Variations

Color Width Length Rolls
per case
lbs/in width
oz/in width
Packaging Country of Origin
Aluminum 48 mm 31 M 24 20 200 17 n/a retail ready USA
Aluminum 72 mm 31 M 16 20 200 17 n/a retail ready USA

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