Duct Mastic – Repairs Access Cuts and Insulation Edges

861842 Duct Mastic for Mechanical Insulation RepairDuct Mastic repairs access cuts and exposed edges on mechanical insulation. Duct-cleaning crews can use it to close insulation opened for service. 861842 Duct Mastic Coverage and Use Repairs access cuts — seals access cuts and exposed edges on mechanical insulation for cleaning access. Seals exposed insulation edges — closes cut edges on mechanical insulation. Made for mechanical insulation — formulated for the insulation on duct systems. Post-service repair — used after cleaning to restore the insulation you opened. Duct Mastic Where It's UsedAir-duct cleaning technicians use Duct Mastic to close access cuts and seal exposed edges on mechanical insulation after servicing a system. It suits residential and commercial duct systems where insulation is opened for cleaning access and then needs to be sealed back up. The mastic addresses the cut edge specifically. Check the product data sheet and SDS before applying. Documents861842 Product Data Sheet (PDF) 861842 Safety Data Sheet (SDS) (PDF) Specifications SKU 861842 Product Type Duct Mastic Formulation Mechanical Insulation