Which Sealant?

[Refueler]

And of course nothing works at all without that magic word ...........







































"Marine"

 

[alahol2]

Do you know why he gives an unqualified - silicone 'should not be used below the waterline'? If it retains its properties for decades and is unaffected by most chemicals I would have thought it ideal for skin fittings etc that are bolted down hard.