Hardcast Iron-Grip Premium Water Based Duct Sealant

By Hardcast


  • Hardcast Brand Iron-Grip premium indoor/outdoor water based duct sealant.
  • Packaging: Standard 1-gallon pails or 11-oz. cartridges.
  • Application method: Brush, putty knife, caulk gun and trowel.
  • Coverage: Approximately 320 lin. ft./gal at 3" width, 20 mil. thick.
  • Time to Test: 48 Hours (varies -see application instructions)..
  • Compliance: UL 94PF, UL 17NF, USDA, EPA, FDA, NSF, U.S. Coast Guard.