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Hardcast 304156 1 Gallon Duct Seal 321 Water Based Duct Sealant

$81.80
Estimated delivery date 2026/06/15
Stock: 2 units

Description

Description

Hardcast/Carlisle - Flex-Grip 550 is an all purpose, fiber-free, 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. Distinguished by its ability to accommodate minor vibration and movement, Flex-Grip 550 stays flexible to save call-back labor. Flex-Grip 550’s excellent coverage rates and easy brush-on application provide low installed cost.

  • UL 181 B-M Listed
  • Passes ASTM C-731, ASTM D-2202
  • USDA, EPA and FDA Approved
  • LEED compliant
  • SCAQMD Rule 1168
  • City of Los Angeles Approval RR #8069
Length 7.75 inches (in) Width 7.75 inches (in) Height 7.5 inches (in) Weight 11 pounds (lbs) Attributes Application Temperature 35°F to 110°F (1.6°C to 43.3°C) Base Synthetic Latex Brand Hardcast/Carlisle Color Gray Composition Synthetic Latex Container Type Pail Country of Origin USA Coverage Up to 320 lin. Ft. at 3" width, 20-mil thickness Cubic Measurement 0.2607 Dimensional Weight 15 Dry Time 48 Hrs EAN 0638532800050 Flame Resistant Yes For Use With 304288 - 2" Chip Brush Prop 65 Yes Service Temperature -20°F To 200°F (-28.89°C to 93.33°C) Shelf Life 1 Year Unopened Size 1 Gallon Solids Content 63% Storage Temperature 35°F to 110°F (1.67°C to 43.33°C) Type Liquid Sealant UL Listed Yes UOM EA UPC 638532800050 Viscosity >300K cps

Specifications

UL 181 B

M Listed

Passes ASTM C

731, ASTM D-2202

Up to 320 lin. Ft. at 3" width, 20

mil thickness

304288

2" Chip Brush

-20°F To 200°F (

28.89°C to 93.33°C)