Foster 85-23 Duct-Fas Adhesive (Non-flammable) | GLT Products

Foster 85-23 Duct-Fas Adhesive (Non-flammable)

Foster® 85-23™ Duct-Fas™ Adhesive is a blue quick setting, synthetic elastomeric insulation adhesive. It has been designed for use in attaching low density (up to 3#) duct liner, duct wrap, and fibrous glass insulation to sheet metal. Non-flammable chlorinated solvents eliminate explosion and fire hazards during application.


  • Full coverage spray characteristics with little tendency to cobweb when applied with conventional or airless spray equipment.
  • Extremely fast tack and bond strength development.
  • Non-flammable in the wet state and fire resistive when dry.
  • No asbestos, lead, mercury, or mercury compounds.

It meets the requirements of ASTM C-916, Type II (ASC-A-7001, Type II). DUCT-FAS Adhesive meets NFPA 90A and 90B 25/50 requirements. DUCT-FAS Adhesive is produced under the classification and follow-up service of Underwriter's Laboratories, Inc.


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