Will this hold up to tempetatures up to 320 degrees??

No it is only rated to 240 degrees Fahrenheit

can this be painted over?

This is not a product that should be exposed such that they finish paint coat would be necessary. It should be used in the rafters and in areas you’re trying to fire block to prevent the spread of flames in an emergency situation. I have no idea if you can paint this, because I don’t think you should ever need to.

Closed cell or open cell?

Should be on the label imo because of its density I would say closed I've seen open cell nowhere near as thick as this you would have to cut this stuff off open cell I can rip w my hands

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3M FB-Foam Fire Block Sealant,12 oz.,Orange,Aerosol

3M FB-Foam Fire Block Sealant,12 oz.,Orange,Aerosol

Product ID: 691747276

Details

Brand
3M
Global Trade Identification Number
Material
Foam
Number of Packs
1

🔥Up to 240°F heat resistance

🧱Adheres to concrete, brick, metal & wood

⏱️Cures in 5 minutes, no mixing

€ 78.79

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Seal the deal on safety and style—because your space deserves the best!

RAPID CURE FORMULA - Ready to use and fully sets within 5 minutes—no downtime
UNIVERSAL ADHESION - Bonds seamlessly to concrete, metal, wood, plastic & more
CODE APPROVED SAFETY - Meets International Building Code (IBC) & Life Code (IRC) fire protection standards
FIRE RESISTANT SHIELD - Withstands heat up to 240°F to protect your space
SUPERIOR SEAL INSULATION - Expands up to 200% volume with R-value 4-5/inch for airtight, energy-smart protection

3M FB-Foam Fire Block Sealant is a high-performance, quick-curing aerosol foam designed to seal penetrations in walls, floors, and ceilings. It offers excellent adhesion to multiple surfaces, minimal shrinkage, and fire resistance up to 240°F. Tested to meet ASTM E 84 standards and compliant with IBC and IRC codes, it expands up to 200% volume, providing superior fire blocking and insulation with an R-value of 4-5 per inch.

Specifications

ASIN	B008KNP928
Best Sellers Rank	#88,708 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #387 in Hardware Sealers
Brand Name	3M
Country of Publication	USA
Customer Reviews	4.4 4.4 out of 5 stars (488)
Global Trade Identification Number	00051115549076
Item Weight	14.4 Ounces
Manufacturer	3M
Manufacturer Part Number	00051115549076
Material Type	Foam
Model Number	98040056149
Number of Items	1
Number of Packs	1
Recommended Uses For Product	Fire blocking and sealing penetrations in walls, floors, and ceilings to prevent the spread of fire and smoke
UPC	051115549076

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

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€ 78.79

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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