You can soften it a long way relatively easily then force it into a shape you want by pressing bu.
Fuel resistant plastic sheet.
Have a question on the chemical resistance of plastics.
Place heavy duty plastic sheeting 6 mil.
Fel pro 3060 gasket material.
We developed 3m scotch weld fuel resistant coating ec 776 as a general purpose solvent based adhesive coating that provides good adhesion to synthetic rubber metal glass and many plastics.
Our fuel and oil resistant elastomer based coating provides good flexibility retaining its flexibility across a range of temperatures.
You won t have much luck melting it though it slumps but never flows.
A no attack possibly slight absorption.
Acetal plastic sheet rod tube and accessories acetal polyoxymethylene or pom provided by interstate plastics is a tough machinable thermoplastic with a high modulus of elasticity high strength good rigidity dimensional stability and resistance to moisture chemicals and solvents.
Negligible effect on mechanical properties.
B slight attack by absorption.
My need was to make replacement gaskets for my plastic gas jugs.
Unless i m mistaken common polyethylene is entirely tolerant of gasoline.
The sheeting also keeps the concrete from clogging the gravel layer when the slab is poured.
It has desirable toughness properties performing well at extreme temperatures and under fatigue endurance.
Permatex 85420 permashield fuel resistant gasket dressing sealant 2 oz tube 4 5 out of 5 stars 197.
I bought this 1 8 material and tried again.
Polyethylene or a vapor retarder on top of the gravel to prevent the soil gases from entering the house.
Ask a plastic expert.
Some swelling and a small reduction in mechanical likely.