Topaz Lighting Weatherproof Du...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3.54
Topaz Lighting Weatherproof Duct Seal Compound, Asbestos-Free

Topaz Lighting Weatherproof Duct Seal Compound, Asbestos-Free

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Model: 961

In Stock (leaves warehouse same day if ordered before 3pm ET)

$3.54
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Topaz Lighting Weatherproof Duct Seal Compound, Asbestos-Free

The Topaz Lighting Weatherproof Duct Seal Compound is a gray, asbestos-free sealing compound designed to close off conduit entries, duct openings, and cable penetrations against moisture, air infiltration, and pests. Commonly packaged in convenient pound-based quantities, including a 1 lb size, this pliable compound is a staple for electricians and contractors who need a dependable, non-hardening seal for indoor and outdoor electrical work. Its moldable consistency allows it to be pressed by hand into irregular gaps around conduit, cable, and duct entries, forming a weatherproof barrier that helps protect wiring systems from the elements.

Key Features

  • Weatherproof Sealing: Formulated to seal conduit and duct entry points against moisture and water intrusion, helping protect electrical connections from weather-related damage.
  • Asbestos-Free Formula: Manufactured without asbestos, supporting safer handling and installation for electrical professionals.
  • Pliable, Moldable Compound: Stays workable so it can be hand-shaped around conduit, cable, and duct penetrations for a custom, gap-filling seal.
  • Gray Color: Neutral gray finish blends with common conduit and duct materials for a clean installed appearance.
  • Pest and Air Infiltration Barrier: Helps block insects, rodents, and drafts from entering through conduit and duct openings.
  • Non-Hardening Consistency: Remains flexible after application, allowing for easier future access or rework at the sealed entry point.

Technical Specifications

  • Department: Electrical
  • Product Group: Conduit & Raceway
  • Product Subgroup: Conduit Bodies & Fittings
  • Product Type: Conduit Body

Typical Applications

  • Sealing Conduit Entries in Commercial and Industrial Installations
  • Weatherproofing Outdoor Electrical Penetrations
  • Duct and Cable Entry Sealing in Panelboards and Enclosures
  • Pest and Draft Prevention at Wall and Roof Penetrations
  • New Construction and Electrical Renovation Projects

Why Topaz Lighting?

Topaz Lighting offers this weatherproof duct seal compound as a practical, asbestos-free solution for sealing conduit and duct penetrations across electrical installations. Its moldable, gray compound formula gives electrical professionals a straightforward way to protect wiring systems from moisture, pests, and drafts, supporting reliable, long-lasting installations. Choose Topaz Lighting for dependable electrical supply products built for professional-grade performance.

Product Specs

Department:
Electrical
Product Group:
Jobsite Supplies
Product Subgroup:
Sealants
Product Type:
Duct Seal Compound
Product Material:
Asbestos-Free Compound
Pack size (unit):
100

Topaz Lighting 961 – Frequently Asked Questions

1) What is duct seal compound used for on conduit and cable entries?
Duct seal is a pliable, non-hardening putty you press by hand into the gap around a conduit, cable, or duct penetration. The Topaz gray compound closes those openings against moisture, air infiltration, insects and rodents, and because it never cures hard you can pull it back out and re-seal the same entry when you add a circuit later. It is not an adhesive and not a fire stop, it is a gap filler at the penetration.
2) Is Topaz duct seal compound asbestos-free?
Yes. The Topaz weatherproof duct seal is made without asbestos, and the material is carried on the spec as an asbestos-free compound. That matters on institutional and school work where older duct seal putties are a handling concern for the crew.
3) Can Topaz duct seal be used outdoors on exterior conduit penetrations?
Outdoor use is what the compound is built for. It is a weatherproof formula for sealing conduit and duct entry points against moisture and water intrusion, and it is rated by the manufacturer for both indoor and outdoor electrical work, including wall and roof penetrations and outdoor enclosure entries.
4) Will duct seal putty stop water getting into a panelboard or enclosure through the conduit?
Pressed into the conduit or cable entry at the enclosure, the gray Topaz compound forms a weatherproof barrier that helps keep moisture off the wiring and connections inside. It is listed for duct and cable entry sealing at panelboards and enclosures. It seals the annular gap around the raceway, so it works alongside the fitting, not in place of a proper weatherproof hub or connector.
5) Do I need tools or a caulk gun to apply Topaz duct seal?
No gun and no mixing. The compound stays moldable so you tear off what you need and thumb it into the opening around the conduit or cable, working it into irregular gaps until the hole is packed. That hand-applied consistency is why it suits odd-shaped penetrations that a bead of caulk cannot bridge.
6) Can I get back into a conduit entry after sealing it with duct seal?
Yes, and that is the practical reason maintenance crews keep duct seal on the truck instead of sealant. The Topaz compound is non-hardening, so it stays flexible after application and can be dug out with a screwdriver or by hand when you need to pull another conductor through, then re-packed. A cured sealant would have to be cut out and the penetration redone.
7) Will duct seal keep mice and insects out of conduit openings in a building?
Blocking pests is one of the stated jobs for this compound. Packed into conduit and duct openings at wall and roof penetrations, the gray Topaz seal helps stop insects and rodents getting in, and it cuts the drafts that come through the same holes. For property managers chasing a rodent entry point, the sleeve openings and abandoned conduit stubs are usually where it goes.
8) Is Topaz duct seal sold in bulk quantities for stocking a warehouse or service fleet?
It ships in a 100 pack size, so it suits MRO stockrooms and service fleets that want a case on the shelf rather than singles. Sizes are pound-based, with a 1 lb size among them, which is the size most electricians carry per truck.
How fast can I get the Topaz Lighting 961 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Topaz Lighting 961 come with a warranty?
Absolutely. The Topaz Lighting 961 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Topaz Lighting 961?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Topaz Lighting 961 from ZenSupply?
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