I'm a Mech Eng seeking a suitable material(s) as a small (45mm OD) cylindrically shaped flotation device for use in diesel fuel tanks. To date, I have looked at extruded closed cell polyethylene (PE) foam or machined billet PE (hollow). I have in my mind a low S.G. foam - preferably hard setting - that can be machined, extruded, cut, or otherwise formed into the desired shape. A suitable material must have a low S.G., be compatible with diesel fuel, and NOT absorb the diesel. These points will ensure the buoyancy force is maximised (per unit volume).
I'd appreciate any assistance you can provide. Kind Regards.
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