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Permatex 85420 Permashield Fuel Resistant Gasket Dressing & Sealant, 2 oz Tube, Orange

Permatex 85420 Permashield Fuel Resistant Gasket Dressing & Sealant, 2 oz Tube, Orange

Q: Can this be used to repair a hairline crack on a plastic stem for a quick connect fuel line?

Michael, I really don't know, but I doubt it. This is not a hardening substance like JB weld. It stays flexible so that parts can be taken back apart again if needed. I would think that just covering the crack in your quick connect line would not be effective. I have only used this product one time so I'm not the voice of experience. My application was to seal between a motorcycle fuel tank and the gasket of the petcock and around the hold down bolts. So far no leaks. However, mechanically for your issue, this does not seem like the proper application as it would not fortify the crack. For the cost of this tube you could source another quick connect. Hope that helps

Q: will this work as a gasket for a carb bowl gasket?

I would not recommend it, or any other liquid gasket material on any carb connections.

Q: Will this seal the bolts in my triumph speed triples gas tank.?

Used it on the threads for my pressure regulator fittings and my fuel pump fittings so far no leaks

Q: Will this work in combination with a fuel pump gasket ?

I used it to seal a plastic spout to a mounting ring for a 5 gallon gas can. The spout came from another gas can and I cut it to size. Unfortunately it wouldn't seal, until I added a bead between the two components. I let it dry for about a week when it hardened. It's worked for at least 2 years without any leaks. Good stuff!

4.6/5

Product ID: 362616524

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Details

Colour
Orange
Brand
Permatex
Item weight
0.18 Pounds
Liquid volume
2 Fluid Ounces
Item form
Liquid

⛽Gasoline & fluid resistant

🔥High-temp flexible

🔧Reassemble-friendly

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Description

🛠️ Seal it like a pro, stay leak-free like a boss!

ENDLESS ASSEMBLY TIME - Tacky formula allows unlimited working time—no rush, no stress.
HEAT PROOF FLEXIBILITY - Remains flexible under rapid temperature changes up to extreme heat.
VIBRATION RESISTANT SEAL - Keeps metal-to-metal joints secure even under constant vibration.
UNMATCHED FLUID RESISTANCE - Withstands gasoline and all automotive fluids for ultimate durability.
PERFECT IMPERFECTION FILLER - Seals surface flaws for a flawless, leak-proof finish every time.

Permatex 85420 Permashield is a 2 oz orange urethane gasket dressing and sealant designed for automotive use. It resists gasoline and other fluids, remains flexible under high temperatures and rapid changes, and allows repeated disassembly without losing sealing power. Its vibration-resistant, tacky formula ensures a reliable, leak-proof seal on metal surfaces, making it a must-have for professional-grade repairs.

Specifications

Manufacturer	Permatex
Part number	85420
Item Weight	81.6 g
Item model number	85420
Size	2 Ounce
Color	Orange
Style	Classic
Material	Urethane
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

Have a Question? See What Others Asked

Can this be used to repair a hairline crack on a plastic stem for a quick connect fuel line?

will this work as a gasket for a carb bowl gasket?

Will this seal the bolts in my triumph speed triples gas tank.?

Will this work in combination with a fuel pump gasket ?

Common Questions

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TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

3 weeks ago

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Fantastic experience overall. Will recommend to friends and family.

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