Hardcast - The Original Two Part II Duct Sealing Ststem

By Hardcast


  • Hardcast Brand original indoor/outdoor two-part, tape and liquid duct joint sealer.
  • Liquid (part one) is applied to both sides of tape (part two) before installation.
  • Tape is white mineral-gypsum-compound-impregnated fiber tape.
  • Bonding time is 72 hours (indoor). See application instructions.
  • Disposable brushes for liquid application to tape.
  • Coverage: approximately one gallon RTA-50 per two 3"x150 ft. rolls of DT-5300.