gas gauge float repair

[Tim Gaines <mtgaines@cs1.presby.edu>]

I recently removed the gas guage sending unit from my 1980 Spitfire
and found that the float was about 1/5 filled with gas.  I drilled a
pin-sized hold and drained the gas, but now I don't know exactly what
to use to seal it back up.  I think I remember this coming up some time
ago.  I believe someone recommended a type of epoxy to paint the surface
of the float.  Can anyone help me out here?

Thanks,

Tim Gaines
1980 Spitfire
1974 TR6