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Drilled a hole in the fuel tank 1 year 11 months ago #193596

Epoxy putty is NOT suitable for HDPE, especialy a fuel tank.

It may be stronger than HDPE, but it has to bond to it to be any good.

Only specialist adhesives and preperation will bond to HDPE. They sort of disolve the surface to produce a chemical welding.

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Drilled a hole in the fuel tank 1 year 11 months ago #193597

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Drilled a hole in the fuel tank 1 year 11 months ago #193606

Update:

I moulded a plug from HDPE using the correct diameter for the hole

I then welded it onto the tank using a soldering iron

It’s not pretty, but I’m confident of the seal

Thanks for all your help folks



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The following user(s) said Thank You: cairnsys

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Last edit: Post by cbbtoan.

Drilled a hole in the fuel tank 1 year 11 months ago #193627

Just to be clear, Plastic Padding is NOT epoxy - it is polyester and definitely will not adhere to polypropylene!
The following user(s) said Thank You: sworkscooper

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Drilled a hole in the fuel tank 1 year 10 months ago #193649

Update:

I moulded a plug from HDPE using the correct diameter for the hole

I then welded it onto the tank using a soldering iron

It’s not pretty, but I’m confident of the seal

Thanks for all your help folks


A week in, how's it holding?

Home to black Alfa Romeo 159 3.2 V6 Q4 ,green MGF VVC and red MG Maestro T16.

MG - the friendly marque.

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Drilled a hole in the fuel tank 2 weeks 5 days ago #198988

A year and 10 months later.... it's holding just fine thanks

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