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

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.

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

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!

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🛠️ Seal it like a pro—never let leaks slow you down!

COMPACT 2 OZ TUBE - Easy to apply with precise control—perfect for professional repairs or DIY
FUEL RESISTANT POWER - Protects gaskets from harsh fuel exposure for lasting performance
WATERPROOF CONFIDENCE - Seals out moisture to prevent leaks and corrosion in any environment
TRUSTED PERMATEX QUALITY - Industry-leading sealant brand trusted by pros worldwide
SYNTHETIC RUBBER STRENGTH - Flexible yet tough paste ensures a reliable, long-lasting seal

Permatex 85420 Perma Shield is a 2 oz tube of synthetic rubber-based gasket dressing designed to resist fuel and water exposure. This waterproof sealant provides durable protection for gaskets in automotive and industrial applications, ensuring leak-free performance and long-lasting reliability.

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720 DH

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Moroccostore

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Material	Synthetic Rubber
Brand	Permatex
Item Weight	0.18 Pounds
Water Resistance Level	Waterproof
Item Form	Paste
UPC	686226854209
Global Trade Identification Number	00686226854209
Number of Items	1
Colour	Orange
Surface Recommendation	Sink, Tub, Window, Counter Top
Manufacturer	Permatex
Item model number	85420
Manufacturer Part Number	85420
OEM Part Number	85420
Volume	59 Millilitres
Outer Material	other
Assembly Required	No
Manufacturer	Permatex
Item Weight	81.6 g

Permatex 85420 Perma shield Fuel Resistant Gasket Dressing Sealant, 2 oz Tube

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