Well, Carl beat be to it...

yea, but he spells his name wrong.

http://www.mcmaster.com/#pop-rivets/=1y4ctq
Will take you right to them.

Sealing Blind Rivets
Also known as closed-end sealing rivets; these fasteners prevent water
and air from passing through or around them. Because 100% of the mandrel
is retained they have higher shear and tensile strength than standard
blind rivets of the same size and material.


Thanks guys, i learned something today.

Karl