Pedestal Gaskets. Both obsolete and currently manufactured are available.
Pedestal Gaskets are used on the tops of pedestals in raised floor applications. They act as a seal for the raised floor system and sometimes have grounding benefits. They come in a wide variety of shapes and sizes. In order to determine the correct stringer gasket for your application you will need to go here. The price shown represents an average cost for a currently manufactured pedestal gasket.