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Permatex 80019 .25 Pint Aviation Form-A-Gasket No. 3 Sealant

Q: How long will the product remain good after opening the bottle?

this is the second time I've bought a bottle of this product. The first one I bought from a local auto parts. When the first one ran out it was over 20 years old and still good. It will last a long time as long as you seal the lid well and don't leave it open for long periods. I use it then put the lid right back on

Q: Is this compatible with plastic fittings? I have a diesel storage tank with 3/4" threads that leak a little and I am looking for a sealant.

I primarily use this on Triumph motorcycle cases and it is the best Permatex (or any) product for the job. I've also used it on rubber pipes to metal banjos and it worked well there too. I suspect that it would work well in your situation but I have not used it on plastic and there are so many kinds of plastic that I would test it first. Personally, on threads where gas or oil is involved, I use the yellow Teflon tape -- it seals gasoline so diesel should be no problem.

Q: My red plastic Moeller marine portable 6 gallon fuel tank has some small gas leaks around the screw on caps - think it would be safe to use...?

It would probably be safe to use but when mine was apparently shipped in a non-pressurized airplane hold. The cap was intact but the sealer had leaked out all over. I will buy locally next time. Auto stores may have it or may be able to get it.

Q: would this work for marine freshwater outboard motor such as water pump gasket sealer

I don't see why it won't..I used it on my oil pump ad my water pump...works great...no leaks..oil, antifreeze does not have any affect on it..Good stuff.

Product ID: 651392553

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Details

Material
Plastic
Brand
Permatex
Style
Compact
Item Weight
5.6 Ounces
Item dimensions L x W x H
6.2 x 6.2 x 7

⏳Slow-drying for precision

🔥Wide temp range -65°F to 400°F

🛢️Resists gasoline, oil & grease

Frequently Bought Together

Permatex 80019 Aviation Form-A-Gasket No. 3 Sealant, 4 oz.

Permatex 80062 High Tack Gasket Sealant, 4 oz.

Permatex 85080 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, Sensor Safe And Non-Corrosive, For High Flex And Oil Resistant Applications 9.5 oz

Description

🛠️ Seal like a pro, perform like a pilot!

VERSATILE APPLICATION - Ideal for close-fitting machined surfaces, hoses, solid gaskets, and threaded connections—your all-in-one sealing solution.
AVIATION GRADE APPROVAL - Trusted by pros in aviation and automotive industries for critical sealing tasks.
CHEMICAL FUEL RESISTANCE - Stands strong against gasoline, oil, and grease for long-lasting protection.
PRECISION SLOW DRY FORMULA - Gives you time to perfect every seal without rush or mess.
EXTREME TEMPERATURE RESILIENCE - Works flawlessly from freezing cold to scorching heat, ensuring durability in any environment.

Permatex 80019 Aviation Form-A-Gasket No. 3 is a slow-drying, non-hardening sealant designed for aviation and automotive use. It resists gasoline, oil, and grease, and operates reliably across a temperature range of -65°F to 400°F. Perfect for sealing close-fitting machined surfaces, hoses, and solid gaskets, this compact brush-top sealant delivers professional-grade performance trusted by industry experts.

Specifications

Material	Plastic
Brand	Permatex
Style	Compact
Item Weight	5.6 Ounces
Item dimensions L x W x H	6.2 x 6.2 x 7 Centimeters
Water Resistance Level	Water Resistant
UPC	686226800190
Net Quantity	1.0 count
Global Trade Identification Number	00686226800190
Number of Items	1
Colour	White
Surface Recommendation	Close-fitting machined surfaces, Hoses, Solid gaskets, Threaded connections, Fuel fittings
Manufacturer	Permatex
Country of Origin	USA
Model number	80019
Item Weight	158 g
Product Dimensions	6.2 x 6.2 x 6.99 cm; 158.76 g
Item model number	80019
Item Height	2.75 Inches
Item Width	2.44 Inches
Are batteries included?	No

Have a Question? See What Others Asked

How long will the product remain good after opening the bottle?

Is this compatible with plastic fittings? I have a diesel storage tank with 3/4" threads that leak a little and I am looking for a sealant.

My red plastic Moeller marine portable 6 gallon fuel tank has some small gas leaks around the screw on caps - think it would be safe to use...?

would this work for marine freshwater outboard motor such as water pump gasket sealer

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