Product Information

Product Details

Part No. 85420

Warranty Details (30 DAY REPLACEMENT IF DEFECTIVE)

Permatex PermaShield Fuel Resistant Gasket Dressing & Flange Sealant is specially formulated for superior fluid resistance. This polyester urethane based gasketing compound withstands extreme temperature changes without hardening. Its non-setting, non-hardening character remains tacky even with rapid changes in temperature, enabling repeated assembly and disassembly of parts. Suitable as either a gasket maker or dressing, PermaShield seals surface imperfections between metal parts and is ideal in high performance applications.

Product Features:

Resistant to gasoline and all other automotive fluids
Remains flexible even at high temperatures and withstands rapid temperature changes
Allows for repeated disassembly and reassembly in metal to metal applications
Seals surface imperfections between metal parts and is ideal in high performance applications
For use as a gasket maker or dressing

4.44 out of 5

9 Customer Reviews

0% of respondents would recommend this to a friend

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Displaying Reviews 1 - 5Back to Top

Would this work on a crack on a gas tank?

Verified Reply - Steve

Hi Shelby, I'm glad to assist you! Permatex only recommending this PermaShield Universal Blue Gasket Sealant - Part # 85420 for axle assemblies, hydraulic parts, differential covers, oil pans (cast), water pumps, bearing caps/brackets, gearboxes, hydraulic equipment covers, intake manifold gaskets, and valve cover gaskets. However, I'd recommend that you contact them directly at 1-877-376-2839 and one of their Parts Pros will gladly assist you with this question.

What is the best product for sealing the opening between the gear teeth of the differential pinion splines and the mating splines of the yoke and for the drive shaft??

Verified Reply - John the Car-Doc

Happy to help, Jimmie! I don't see a compatible part available for repairing the gear teeth, I would recommend that you check with the nearest Advance store for a compatible part availability.

Is this a good product to use as a fuel line sealant instead of Teflon tape? I have a leak where the petcock meets the tank on a custom motorcycle. All threads are good but still leaks through the threads.

Verified Reply - Steve

Hi Stack, glad to assist you! This Permatex Gasket Sealant (Part No. 85420) is suitable as either a gasket maker or dressing, PermaShield seals surface imperfections between metal parts and is ideal in high performance applications. With an operating temperature range of -60° to 500°F (-50° to 260°C), this compound resists common engine fluids, including oil, gasoline, ethanol, water and anti-freeze and prevents contamination from moisture and dust. Suggested Applications: Axle assemblies, hydraulic parts, differential covers, oil pans (cast), water pumps, bearing caps/brackets, gearboxes, hydraulic equipment covers, intake manifold gaskets, and valve cover gaskets.

Can this be used on engine casting in a car - temperatures & vibration are supposed to be high in these places - is it gasoline / water resistant

Verified Reply - Solomon

I'm happy to help, Raman! Its operating temperature range of -60° to 500°F (-50° to 260°C) and this compound resists common engine fluids, including oil, gasoline, ethanol, water and anti-freeze and prevents contamination from moisture and dust.

What is the drying time for this before assembling parts? Thanks

Verified Reply - Steve

Hi Drexel, glad to assist you! There is no specific drying time for this Permatex Gasket Sealant (Part No. 85420). Allow ample drying time to completely evaporate solvent. For more information, please copy and paste this technical data sheet link. URL - https://www.permatex.com/wp-content/uploads/tech_docs/tds/85420.pdf

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