Nashua 360-45 Heavy Duty FoilMastic Butyl Rubber Tape

Printable View

Polyken/Nashua 360-45 Heavy Duty FoilMastic Butyl Rubber Tape is a printed, 2 mil dead-soft aluminum foil backing with a 43 mil butyl rubber mastic adhesive. It is a waterproofing repair tape used for indoor or outdoor sealing of low, medium & high pressure HVAC duct systems (includes: metal duct, fiberglass duct and flexible duct systems). It seals cracks and seams in gutters, roof alleys, eaves, hips and ridges. Seal around chimneys and vent stacks; rooftop duct systems; and leaks in vans, cars and trucks. Also used for mobile home repair. Repair gouges, rips, tears in metal panels of trailers, shipping containers and metal buildings. Use duct mastic to mend poorly sealed connections; improve indoor air quality (since fewer pollutants circulating); lower utility bills; and burn fewer fossil fuels. Features include:

  • Permanent sealant. Provides instant water tight bond.
  • Heavy duty all weather foil coated butyl mastic.
  • Excellent adhesion to most surfaces.
  • Extremely conformable.
  • Paintable 2 mil foil backing (use in place of caulk).
  • Non-staining adhesive.
  • Excellent resistance to cold, heat, water, and sunlight.
  • Release liner provides ease of installation.
  • Acceptable for use on galvanized materials.
  • Printed for easy identification.
  • Low VOC content and can contribute towards satisfying EQ Credit 4.1 (Low Emitting Materials, Adhesives & Sealants) under LEED®.

View Product Data Sheet
Technical Specifications

Nashua 360-45 Heavy Duty FoilMastic Butyl Rubber Tape Specifications

  • Adhesive: butyl rubber   How are adhesives different?
  • Carrier/Backing: 2 mil aluminum foil - printed
  • Release Liner: LDPE (low-density polyethylene) film
  • Thickness: 45 mils (carrier, adhesive) 43 mils (adhesive) 2 mils (carrier)    What is a mil?
  • Adhesion: 63 ounces per inch (to stainless steel)
  • Tensile Strength: 20 pounds per inch (longitudinal)
  • Service/Operating Temperature: 40°F to 300°F
  • Certifications: UL723; LEED - contributes toward satisfying EQ Credit 4.1
  • Core: 3" diameter
* specifications are those given by manufacturers and are not tested for accuracy
Operation Homefront
From May 22 to May 28, 2015, for each purchase a customer makes on, we will donate 10% of the total merchandise price to Operation Homefront. We plan to donate up to $10,000 to the nonprofit during this promotion. Click here to read why we are supporting them.

Nashua 360-45 Heavy Duty FoilMastic Butyl Rubber Tape View Larger ImageView More Images
Ordering Options
Quantity:    Rolls or Cases? View Complete Pricing on all Available Sizes
Color: Silver
Roll Size: **
item offered in 2 variations; most popular is 6 in. x 30 ft. (Silver) see table below for all sizes
$ Price per item will display once
the above selections are made.
** Adhesive tape products are NOT guaranteed to be splice-free. Sizes shipped will typically be the tape industry standard metric-cut sizes, i.e. 24mm for each 1 inch of nominal tape width ordered (rolls are approximately 5% narrower than the nominal size). Please contact us to inquire about pricing for full-cut widths; e.g. a 6 inch roll cut to 152mm instead of 144mm.
Go back to Ordering Options form
Pricing Table
4 in. x 30 ft.
Actual Size: 96mm x 30 ft.
360-45/43012SINGLE ROLL

(1 to 11 rolls)


(12 to 59 rolls)


(60 to 119 rolls)


(>= 120 rolls)









* see individual roll price to left







6 in. x 30 ft.
Actual Size: 144mm x 30 ft.
360-45/6308SINGLE ROLL

(1 to 7 rolls)


(8 to 39 rolls)


(40 to 79 rolls)


(>= 80 rolls)









* see individual roll price to left







Shopping Cart
Find The Best Pricing on Adhesive Tape...
The Easiest Shopping for All Brands of Tape.
BBB accredited business.
McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams
For all of your Adhesive Tape needsShop by CategoryAdvanced Tape FinderPrintable CatalogSearch for adhesive tapeKeyword

Recently Viewed Products

Sign Up For Our Newsletter!

Sign up today to be notified of upcoming deals and exclusive offers!

Keep up to date on our latest news

Copyright ©2003-2015 LLC. All Rights Reserved. SSL Seal