Hardcast 1403-181BFX Foil-Grip 3″x100′ UL181 HVAC Duct Seal Tape

SKU: 309780

Weight	5 lbs
Dimensions	12 × 11 × 5 in

$78.22

In stock — available to order.

Sold individually. Each quantity ordered is one unit. Kits are one complete kit; products sold by length use the stated length unit.

Same-item volume pricing

Quantity	Unit price	Saving
1–4	$78.22	0%
5–9	$74.31	5%
10+	$70.40	10%

Estimate for this quantity before shipping. Tax display follows store settings. Existing cart quantities can increase the tier. Only one offer applies; a coupon replaces automatic pricing. For 20+ units, contact support for a quote.

Available to order.

Bulk quantity & quote

Quantity needed

Enter the total quantity you need. We will confirm availability and a quote before you order.

Need a firm ship date? Availability may include supplier stock. Confirm availability before ordering for time-sensitive work.

Hardcast 1403-181BFX Foil-Grip 3"x100' UL181 HVAC Duct Seal Tape

Specifications & product details

Overview

Hardcast Foil-Grip™ 1403-181BFX – 3" x 100' UL181BFX Duct Seal Roll

The Hardcast Foil-Grip™ 1403-181BFX is a UL181BFX listed pressure-sensitive rolled mastic sealant engineered for professional HVAC duct sealing applications.

Designed with a high-performance 40-year cycle butyl adhesive, this foil-backed duct seal provides instant weather-resistant grip and long-term air sealing performance. It bonds aggressively to sheet metal, duct board, flex duct, PVC coated duct systems, and vapor barrier materials.

Key Features

• 3" x 100' roll• UL181BFX listed for flexible air ducts• Pressure-sensitive butyl adhesive• Foil-backed rolled mastic• Long-term durability• Excellent weather resistance• Flexible and conformable

Applications

• Sealing duct joints & seams• Sheet metal duct connections• Flex duct installations• Duct board sealing• Vapor barrier sealing
This professional-grade HVAC duct sealing product is widely used by contractors for airtight system performance and code-compliant installations.

Product details

Part / SKU	309780

Package includes

Hardcast 1403-181BFX Foil-Grip 3"x100' UL181 HVAC Duct Seal Tape

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.

Compatibility & part-number help

Match the manufacturer part number and equipment model to the listing. Check connection sizes, fuel type, pressure or capacity, voltage and dimensions where applicable. A similar appearance or part number alone does not confirm compatibility.

For help, send a parts inquiry with the part number, equipment model, label photos and quantity. Manufacturer documents and item-specific information, when supplied, are in the product details above.

Shipping & availability

Availability may include our inventory and supplier sources. Listed stock does not by itself confirm immediate dispatch. Ask us to confirm a ship date before ordering for time-sensitive work.

Shipping methods and charges appear at checkout where available. Freight, oversized and specially handled items may require a quote. See our Shipping Policy for processing periods, restrictions and delivery information.