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Duct Mastic Sealant 1 Gallon
Duct Mastic Sealant 1 Gallon

List Price: $28.00
Our Price: $17.90
You save $10.10!

Availability: Usually Ships in 2 to 3 Business Days
Product Code: 37038


A non-toxic adhesive-sealant used for permanently sealing the fabricated joints and seams of sheet metal air ducts, UL-181 listed rigid fiberglass air ducts, UL-181 listed flexible air ducts and thermal insulation. It is also ideal for repairing damaged and leaking air ducts and sealing conditioned spaces from air infiltration.

  • Water-based and non-flammable
  • High solids content
  • Fiber reinforced
  • Excellent longevity
  • Fire resistant
  • Weather Resistant
  • Elastomeric
  • Easy application and clean-up

Adheres to most construction surfaces, including but not limited to:
  • Aluminum Foil
  • Aluminum Foil Scrim
  • Calcium Silicate Insulation
  • Cellular Glass
  • Fiberglass Insulation
  • Galvanized Steel
  • Gypsum board
  • Concrete
  • Masonry
  • Polystyrene Foam
  • Polyurethane Foam
  • Polyester Plastic
  • Primered Steel
  • PVC Plastic
  • Sheet Aluminum
  • Wood
CCWI - 181 is a versatile, all purpose duct sealant for use on all types of metal duct, glass fiber duct board, and flex duct, as well as duct fabric and flexible tubing runouts. CCWI - 181 incorporates a built-in polyester reinforcement for exceptional strength, with UV inhibitors for outdoor use. -CCWI-181 is UL 181A-M & UL181B-M Listed -Passes ASTM C-731, D-2202 USDA, EPA & FDA Approved LEED compliant SCAQMD Rule 1168. -City of Los Angeles Approval RR #8427

Average Customer Review: 4.5 of 5 Total Reviews: 3 Write a review.

  0 of 0 people found the following review helpful:
April 16, 2018
Reviewer: Roger Reville from Vienna, ME United States/clearwater fla  
all products worked well good handling by all           thanks

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  0 of 0 people found the following review helpful:
Duct mastic sealent February 2, 2018
Reviewer: John Joiner from High Springs, FL United States  

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  0 of 0 people found the following review helpful:
Duct Mastic Sealant 1 Gallon Generic November 29, 2016
Reviewer: Anonymous Person from 33705  

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