Hardcast/Carlisle 304156 - Duct-Seal™ 321 Water Based Duct Sealant, Grey, 1 Gallon

Item: DS-321-1G
MFG: 304156
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Duct-Seal™ 321 Grey, 1 gallon pail, is an all purpose industrial grade duct sealant for all types of metal duct, glass fiber duct board, and flex duct, as well as duct fabric and flexible tubing runouts. It includes UV inhibitors for extended outdoor exposure and built-in fiber reinforcement for added strength. This non-toxic water based product is solvent free and is suitable for residential use.
  • Duct-Seal™ 321 is UL 181 B-M Listed
  • Passes ASTM D-2202, ASTM C-731. USDA, EPA and FDA Approved. LEED compliant SCAQMD Rule 1168.
  • City of Los Angeles Approval RR #8069

California residents: see Proposition 65 Warning


picture_as_pdf safety data sheet

picture_as_pdf specification sheet

picture_as_pdf submittal sheet

Features and Specification

ERP ID 232864
Weight 10.750000
Package Weight 43.000000
Package Length 16.000000
Package Height 8.000000
For Use With 304288 - 2" Chip Brush
Functions Duct Sealant
Height 7.500000
Length 7.750000
Standards ASTM E-84, ASTM C-731, ASTM D-2202, SCAQD Rule 1168, NSF, FSIS, & Michigan Department of Quality Criteria
Storage Temperature 35°F to 110°F (1.6°C to 43.3°C)
Type Liquid Sealant
Solvent No
Solids Content 65%
Size 1 Gallon
UL Listed No
UL Recognized No
UPC 638532800500
Shelf Life 1 Year Unopened
Service Temperature -20°F to 200°F (-28.8°C to 93.3°C)
Package Width 16.000000
Viscosity Thixotropic
Width 7.750000
Base Synthetic Latex
Application Brush, Putty Knife, Caulk Gun or Trowel
Application Temperature 35°F to 110°F (1.6°C to 43.3°C)
Approvals UL 181 B-M, UL 723 & City of Los Angeles
Brand Hardcast/Carlisle
Composition Synthetic Latex
Container Type Pail
Coverage Up to 320 lin. Ft. at 3" width, 20-mil thickness
Flexibility Passes 1/4" mandrel bend
EAN 0638532800500
Dry Time 48 Hrs
Dimensional Weight 15.000000
Cubic Measurement 0.260700