Red Devil 0841DX F-Seal 181 Duct Seal, Fiber Reinforced Water Based Duct Sealant, 1 Gallon, Gray, Made in USA

Red Devil 0841DX F-Seal 181 Duct Seal, Fiber Reinforced Water Based Duct Sealant, 1 Gallon, Gray, Made in USA

Q: Is the "F" in the bucket like a liquid (brushable) or more like a paste?

It's not quite like a paste but it's not liquidity either and doesn't drip so you can put it on thick. I love this stuff, not much of a odor as well. I used a cheap chip brush to spread it.

Q: I'm redoing all the flex ductwork (insulated kind) in a crawl space. should i use the d our f sealant ?

You could use either one. Both are perfect for what you are doing, but I would use the F-Seal because it has fibers in it.

Q: Is this safe to use and will it work on gas dryer duct work joints (inside the fittings and outside)?

Sorry, this should not be used on a dryer. It is for HVAC only. Thanks.

Product ID: 41959850

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Details

Material
Acrylic
Brand
Red Devil
Style
1 - Pack
Item Weight
12.5 Pounds
Item dimensions L x W x H
7 x 7 x 8

⚡Fast-drying, low VOC formula

🌦️Weather-resistant for indoor/outdoor

🛠️Fiber-reinforced for leak-proof HVAC

Frequently Bought Together

Red Devil 0841DX F-Seal 181 Fiber Reinforced Water Based Duct Sealant, 1 Gallon, Gray, Made in USA

Pro Grade - Chip Paint Brushes - 12 Ea 2 Inch Chip Paint Brush Light Brown

Description

🔧 Seal smart, save energy, and stay ahead of the curve!

CERTIFIED VERSATILITY - UL 181 A-M & B-M certification means seamless compatibility with metal, fiberglass, and flexible ducts.
FAST SAFE APPLICATION - Low VOC, quick-dry formula minimizes downtime and keeps your workspace healthier.
UNRIVALED HVAC EFFICIENCY - Fiber-reinforced formula guarantees airtight seals that boost energy savings and system performance.
INDUSTRY LEADING STANDARDS - Exceeds SMACNA Pressure and Sealing Classes for professional-grade reliability every time.
BUILT TO BRAVE THE ELEMENTS - Weather-resistant durability ensures long-lasting protection against mold, mildew, and UV exposure indoors or out.

Red Devil 0841DX F-Seal 181 is a premium, fiber-reinforced, water-based duct sealant designed for superior HVAC sealing. UL 181 A-M & B-M certified, it works on all duct types and withstands indoor/outdoor conditions with fast drying and low VOCs. Made in the USA, it surpasses industry standards for pressure and sealing, ensuring energy-efficient, durable HVAC performance.

Specifications

Material	Acrylic
Brand	Red Devil
Style	1 - Pack
Item Weight	12.5 Pounds
Item dimensions L x W x H	7 x 7 x 8 inches
Water Resistance Level	Water Resistant
Item Form	Paste
UPC	075339003466
Unit Count	128.0 Fluid Ounces
Global Trade Identification Number	00075339003466
Number of Items	1
Color	Gray
Surface Recommendation	Metal
Manufacturer	Red Devil
Part Number	0841DX
Item Weight	12.5 pounds
Product Dimensions	7 x 7 x 8 inches
Item model number	0841DX
Size	1 Gallon
Finish	Brushed
Pattern	Sealant
Shape	Rectangular
Power Source	Hand_powered
Item Package Quantity	1
Included Components	Duct Sealant
Batteries Required?	No

Have a Question? See What Others Asked

Is the "F" in the bucket like a liquid (brushable) or more like a paste?

I'm redoing all the flex ductwork (insulated kind) in a crawl space. should i use the d our f sealant ?

Is this safe to use and will it work on gas dryer duct work joints (inside the fittings and outside)?

How long do I need to wait before turning on the A/C after application?

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