Utilize duct tape or masking tape to any weeping seams, holes or porous spots. This tends to prevent any Fuel Tank Sealer from oozing out, and enables it to bridge more than the hole. Plug the outlet ports with putty or Perform-Doh. Paul Whitehead, former handling director at Cutlers said: https://caswellgroup13355.mybuzzblog.com/16175600/the-basic-principles-of-ductworth-installation