SeaSucker products attach to glass, metal, fiberglass, and most non-skid surfaces. The primary requirement is that the surface is non-porous.
And yes, you heard us: SeaSuckers work on most non-skid surfaces! The only exception is the deep, diamond-cut non-skid that you often find on the floor of the boat. We just stress that it is even more important to wet your SeaSucker and clean the surface with a little water and a rag before attaching to non-skid in order to ensure the longest seal.
SeaSuckers will also attach to lightly curved surfaces so long as the full edge of the cup is able to touch the surface while it’s being pumped.