Not sure what you mean,but yes they are.Water just runs off them and they don't absorb water either.What is it you're wanting to do with them??
Kathi

yes, in the sense that they do not dissolve if you leave them in water for a week... I think they're a plastic, not a proper glue...

they're not very good as glue, though - if one of the objects is porous (paper, cloth), it will tend to swell, and loosen enough to make it unstable.

They sell them at the dollar store.....better price! Yes...waterproof...

Lot of" hot glue" melts if in area of hot sun so it can take rain but not sun! Jan