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Silver foil tape roll 72mm wide 100ft long on 3 inch core

NASHUA

NASHUA 367-17 FoilMastic Butyl Rubber Sealant Tape 72mm x 100ft Silver

SKU CH-HNFF-N98DH

UL 181B-FX listed butyl rubber sealant tape for HVAC, gutter and roofing repairs, 72 mm wide by 100 ft long

  • TypeFoil Tape
  • ColorSilver
  • UL 181B-FX listed for code-compliant HVAC sealing
  • Aggressive butyl mastic adhesive creates instant air and water-tight seal
  • Conformable 2 mil foil backing fits round, square or odd-shaped objects
  • Low VOC content supports LEED EQ Credit 4.1 requirements
  • Performs to SMACNA pressure classes up to 10-inch w.g.

HVAC duct and sheet-metal sealing tape

Nashua 367-17 FoilMastic is a UL 181B-FX listed foil tape with a 15-mil butyl rubber adhesive on a 2-mil aluminum backing. It seals low, medium and high-pressure ductwork, gutters, roofing seams and trailer joints for indoor or outdoor service.

Pressure-class and code limits

The tape performs to SMACNA pressure classes from .5 up to 10 inches w.g. and meets seal classes A, B and C. UL 181B-FX listing confirms compliance with mechanical-code requirements for duct closure.

Replaces liquid mastics and cloth tapes

Builders switch from brush-applied mastics or cloth-backed tapes when they need instant water-tight and air-tight bonds without cure time. The jump is worth it on jobs that demand low VOC content, flame-spread resistance and conformability around irregular profiles.

Highlights

  • UL 181B-FX listed for code-compliant HVAC sealing
  • Aggressive butyl mastic adhesive creates instant air and water-tight seal
  • Conformable 2 mil foil backing fits round, square or odd-shaped objects
  • Low VOC content supports LEED EQ Credit 4.1 requirements
  • Performs to SMACNA pressure classes up to 10-inch w.g.

Specifications

TypeFoil Tape
ColorSilver

Questions about this item

Which width should I choose for sealing standard HVAC duct seams?

The 72 mm width covers typical sheet metal and flexible duct joints in a single pass, reducing overlap time on both low and high pressure systems.

What does the 15 mil butyl rubber layer do once the tape is applied?

It creates an instant water and air-tight bond that resists moisture, solvents, and pressure classes up to 10 inch w.g. across seal classes A, B, and C.

What does UL 181B-FX listing mean for my installation?

It confirms the tape meets code requirements for HVAC duct sealing and can contribute toward LEED EA Credit 1 and EQ Credit 4.1 compliance.

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