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.

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.

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.

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

Hi, you should wait 24 hours. Thanks....

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

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

Product ID: 303805407

Details

Brand
Red Devil
Item dimensions L x W x H
17.8 x 17.8 x
Item weight
1 Pounds
Material
Silicone
Style
1 - Pack

🌿Low VOC & LEED EQ 4.1 Compliant

💧Water-based & water resistant

🛠️UL 181 a-m & b-m certified

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Description

💨 Seal smart, breathe easy — the pro’s choice for HVAC perfection!

MADE IN THE USA - Proudly crafted with precision in Oklahoma for trusted quality
DURABLE FLEXIBLE - Fiber reinforced for long-lasting adhesion and crack resistance
CERTIFIED PERFORMANCE - Meets UL 181 a-m & b-m standards for airtight HVAC sealing
ECO CONSCIOUS FORMULA - Low VOC, LEED EQ 4.1 compliant for healthier indoor air quality
VERSATILE APPLICATION - Works seamlessly on metal, fiberglass, and flex duct systems

Red Devil 0841DX F-Seal 181 is a premium fiber reinforced, water-based duct sealant designed for both indoor and outdoor HVAC applications. Certified to UL 181 a-m & b-m standards, it ensures airtight sealing on metal, fiberglass, and flexible ducts. With low VOC content and LEED EQ 4.1 compliance, it supports healthier environments while delivering durable, flexible adhesion. Proudly made in the USA, this 1-gallon gray sealant is the trusted solution for professional-grade HVAC sealing.

Specifications

ASIN	B01I7JVUO0
ASIN	B01I7JVUO0
Batteries	1 Unknown batteries required.
Best Sellers Rank	#77,490 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #99 in Heating & Cooling Ducting Products
Brand Name	Red Devil
Color	Gray
Compatible Material	Plastic
Customer Reviews	4.4 4.4 out of 5 stars (1,246)
Customer reviews	4.4 4.4 out of 5 stars (1,246)
Date First Available	11 July 2016
Global Trade Identification Number	00075339003466
Included Components	Duct Sealant
Item Dimensions	17.8 x 17.8 x 20.3 centimeters
Item Form	Paste
Item Type Name	Water Based Duct Sealant, 1 Gallon
Item Weight	1 Pounds
Item model number	0841DX
Manufacturer	Red Devil
Manufacturer	Red Devil
Material Type	Silicone
Model	0841DX
Number of Items	1
Part Number	0841DX
Product Dimensions	17.78 x 17.78 x 20.32 cm; 453.59 g
Style Name	1 - Pack
Supported Standards	UL 181 a-m, UL 181 b-m
Surface Recommendation	Duct
UPC	075339003466
Unit Count	128 Milliliters
Water Resistance Level	Water Resistant

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38909 kr

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Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to Iceland.

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