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Duct Mastic – Repairs Access Cuts and Insulation Edges

Duct Mastic – Repairs Access Cuts and Insulation Edges

Brand: NikroSKU: 861842In Stock – Ready to Ship
$26.00

Ships from US manufacturer with factory warranty

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861842 Duct Mastic for Mechanical Insulation Repair

Duct 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 Used

Air-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.

Documents

861842 Product Data Sheet (PDF)

861842 Safety Data Sheet (SDS) (PDF)

Specifications

SKU 861842
Product Type Duct Mastic
Formulation Mechanical Insulation

Manufacturer's Warranty

This product comes with a full manufacturer's warranty. All warranty claims are handled directly by the manufacturer.

For specific warranty details, please contact us at +1 (978) 295-7538 or email info@uscleaningtools.com

B2B & Tax-Exempt Purchases

We supply contractors, restoration companies, property managers, schools, government agencies, and other tax-exempt organizations.

How to place a tax-exempt order:

  1. Write to us through our Contact Us page or email info@uscleaningtools.com and attach your valid tax exemption certificate (state resale or exemption certificate).
  2. We verify your certificate and mark your account tax-exempt — usually within one business day.
  3. Place your order and sales tax will not be charged.

For volume pricing or purchase orders, call +1 (978) 295-7538.

Shipping & Returns

Free shipping on most brands for orders over $300, delivered to the lower 48 states. Any brand-specific freight rate is shown at checkout before you pay.

Processing & delivery: in-stock orders are processed within 1–2 business days and typically deliver in 5–7 business days. Tracking is emailed within 24 hours of shipment. Built-to-order and backordered equipment shows its lead time on this page.

Freight deliveries: inspect your equipment on arrival and note any damage on the delivery receipt. Items damaged in transit or defective on arrival are fully covered at no cost to you.

Cancellations: cancel any time before your order ships. Refunds are issued for the order total minus the non-refundable payment processing fee (2.9% + $0.30), so a cancellation is not always a 100% refund. No fee is deducted if we cancel the order or the item arrives damaged or defective.

30-day returns: return unused equipment in its original packaging within 30 days of delivery. Change-of-mind returns are subject to a restocking fee. To start a return, email info@uscleaningtools.com or call +1 (978) 295-7538.

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Frequently Asked Questions

What is Duct Mastic used for?
It is used to repair access cuts and exposed edges on mechanical insulation.
When do I apply it?
Apply it after making access cuts for duct cleaning, to seal the openings and exposed insulation edges.
Is it for the whole duct?
No. It is a repair material for access cuts and exposed edges on mechanical insulation, not a full-duct coating.

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