Top recommendation for duct sealer

Finding your suitable duct sealer is not easy. You may need consider between hundred or thousand products from many store. In this article, we make a short list of the best duct sealer including detail information and customer reviews. Let’s find out which is your favorite one.

Best duct sealer

Product	Features	Editor's score	Go to site
	Red Devil 0841DX F Seal 181 Water Based Duct Sealant, 1 gallon, Gray		Go to amazon.com
	Design Polymerics 1030 Water Base Duct Mastic Sealant Pail 0.50-Gallon		Go to amazon.com
	UNITED STATES HDW KK0326 64 oz Duct Seal		Go to amazon.com
	Gardner Bender Available DS-110N 1-Pound Duct Seal Compound, Gray Green		Go to amazon.com
	Red Devil 0841DS RD-DS 181 Acrylic Latex Duct Sealant.5 Gallon, Gray		Go to amazon.com
	Duct Sealing Compound		Go to amazon.com
	#7 Mastic Air Duct Sealant (1 gallon)		Go to amazon.com
	Red Devil 0846DS RD-DS 181 Acrylic Duct Sealant, Gray		Go to amazon.com
	Flex Seal Spray Rubber Sealant Coating, 14-oz, Clear		Go to amazon.com
	No. 7 Mastic Premium Air Duct Sealing Kit		Go to amazon.com

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1. Red Devil 0841DX F Seal 181 Water Based Duct Sealant, 1 gallon, Gray

Feature

High quality, fiber reinforced
UL 181 a-m & b-m certified
Can be used on all types of HVAC ductwork
Mildew resistant
Interior/exterior

Description

A high quality, fiber reinforced duct sealant/mastic that is UL 181 a-m & b-m certified and can be used on all types of HVAC ductwork.

2. Design Polymerics 1030 Water Base Duct Mastic Sealant Pail 0.50-Gallon

Feature

Low to high velocity air duct sealant, Color- Gray
Used for permanently sealing sheet metal and flexible duct system joints
UL-181 listed rigid fiberglass and flexible air ducts
Water based non flammable fire & weather resistant
Consult your local building codes for approved installation practices

Description

Speedi-Products Low to high Velocity Air Duct sealant. Non Toxic adhesive sealant. Used for permanently sealing sheet metal and flexible duct system joints. UL-181 listed rigid fiberglass and flexible air ducts. Water based non flammable fire and weather resistant. Easy application and clean up.

3. UNITED STATES HDW KK0326 64 oz Duct Seal

Feature

Manufactured in United States
Easy to use
Highly durable

Description

64 OZ Duct Seal, Fiber Reinforced, Water Based, Premium Quality, High Velocity For Commercial & Residential Supply & Return Air Duct Use, Recommended For Sealing Joints, Seams, & Duct Wall Penetrations On Metal Air Duct, Recommended For Sealing Connections On Flexible Duct Or Fiberglass Duct Board, Crack & Peel Resistant, Mold & Mildew Resistant, Indoor & Outdoor Use, UL Listed 181A-M/B-M, LEED Qualified.

4. Gardner Bender Available DS-110N 1-Pound Duct Seal Compound, Gray Green

Feature

Duct seal compound
Seals conduit openings against drafts, dust, moisture and noise
Protects terminal boxes, pot heads and bushings from corrosive elements
Deadens switch gear panel noise
Dough like compound is easily thumbed over holes and gaps

Description

Gardner Bender DS-110N 1-Pound Duct Seal Compound

5. Red Devil 0841DS RD-DS 181 Acrylic Latex Duct Sealant.5 Gallon, Gray

Feature

Permanently flexible
Paintable
Strong adhesive grip
Non-flammable
Excellent elasticity

Description

Rd-ds 181 acrylic duct sealant is a Gray water-based duct sealant used in medium and high-pressure duct systems. Made in USA

6. Duct Sealing Compound

Feature

Intended for sealing around electrical service entries, junction boxes and other devices where weather-proofing is critical
Will stay soft and pliable for several years and has an excellent shelf life
Will not damage wire covers, glass, wood, painted surfaces, plastics or other materials it may contact
It is chemically inert, inhibiting no chemical activity and is nontoxic
Contains no asbestos or mineral fibers and no mineral oil which can shorten the effective life of the product

Description

NSI Intended for sealing around electrical service entries, junction boxes and other devices where weather-proofing is critical. Will stay soft and pliable for several years and has an excellent shelf life. Will not damage wire covers, glass, wood, painted surfaces, plastics or other materials it may contact. It is chemically inert, inhibiting no chemical activity and is nontoxic. Contains no asbestos or mineral fibers and no mineral oil which can shorten the effective life of the product. Remains pliable through a wide range of temperatures and will adhere to most clean dry surfaces.

7. #7 Mastic Air Duct Sealant (1 gallon)

Feature

#7 Mastic Low to High Velocity Air Duct Sealant. Color: Gray
Premium Grade Duct Mastic That Remains Flexible & Saves Energy.
UV & Weather Resistant, Water-Borne, & Non-Flammable.
Easily Applied By Brush, Trowel, Putty Knife, or Palm.
Save Energy - Seal Your Air Ducts & Crawl Spaces.

Description

RCD Corporation #7 Mastic Low to High Velocity Air Duct Sealant is a premium grade water-borne duct sealant used for permanently sealing the fabricated joints and seams of sheet metal air ducts, rigid fiberglass air ducts, flexible air ducts and thermal insulation. #7 Mastic Low to High Velocity Air Duct Sealant is the best choice for repairing leaking air ducts and sealing conditioned spaces and crawl spaces from air infiltration. Sealing and insulating air ducts along with home and crawl space sealing improves indoor air quality, reduces excess humidity, and reduces energy costs.

8. Red Devil 0846DS RD-DS 181 Acrylic Duct Sealant, Gray

Feature

Permanently flexible
Paintable
Strong adhesive grip
Non-flammable
Excellent elasticity

Description

Rd-ds 181 acrylic duct sealant is a Gray water-based duct sealant used in medium and high-pressure duct systems. Made in USA

9. Flex Seal Spray Rubber Sealant Coating, 14-oz, Clear

Feature

Liquid rubber sealant coating.Works for skylights, gutters, downspouts, flashing, windowsills, PVC pipes, roof leaks, hoses, duct work, foundations, awnings, vent pipes, AC drip pans, RVs and campers, trailers
Ready to use
This product is manufactured in United states

Description

Flex Seal Spray Rubber Sealant Coating, 14-oz, Clear

10. No. 7 Mastic Premium Air Duct Sealing Kit

Feature

Kit Includes: No. 7 Mastic (1 can 915ml), 2 inch Mastic Brush (1 ea.),
Can Opener (1 ea.), LED Flashlight with batteries (1 ea.),
Red Shop Towel (1 ea.), Black Burlap Bag (1 ea.)
RCD Corporation No.7 Mastic is a premium grade air duct sealant that dries quickly to a tough flexible seal.
Water Borne, Low Odor, Weather Resistant, Non-Flammable

Description

RCD Corporation No. 7 Mastic is a water-borne air duct sealant, fully manufactured in the USA, used for permanently sealing the fabricated joints and seams of sheet metal air ducts, rigid fiberglass air ducts, flexible air ducts and thermal insulation. RCD Corporation No. 7 Mastic is a premium grade sealant used for repairing damaged, leaking air ducts and sealing conditioned spaces from air infiltration. Bundled with the other components in our kit, you will have everything you need to tackle improving your home by sealing leaking air ducts. Doing so will save energy, conserve electricity, reduce your carbon footprint, and save you money. No. 7 Mastic is water-borne and elastomeric, with high solids content. It is easy to apply, drys quickly, and can earn LEED Credits. The U.S. Environmental Protection Agency's Energy Star program recommends insulating and sealing air ducts. Sealing and insulating air ducts along with home sealing and crawl space sealing will improve indoor air quality, reduce excess humidity and significantly reduce energy costs.

Conclusion

All above are our suggestions for duct sealer. This might not suit you, so we prefer that you read all detail information also customer reviews to choose yours. Please also help to share your experience when using duct sealer with us by comment in this post. Thank you!