Expander Plugs for  
Hydraulic Applications 

Bolt Products is your wholesale distributor for all your Expander Plugs and associated Tools.

KOENIG-EXPANDER® Plugs are very effective for closing drilled holes in hydraulic applications that use fluid power technology, such as integrated hydraulic circuits, or manifolds.  Koenig

The corrosion-resistant plugs for offshore and marine applications are used for drill hea