Expansion Plugs
Tapered rubber stoppers assembled with stainless steel hardware and a wing nut, provide a mechanism to make an expandable rubber plug. This ensures seals and keeps plugs from working their way out, as well as allowing the plugs to resist added pressure. They are fully customizable from hardware materials and styles to the rubber plug shape and material.
Uses include;
Available for retail purchase at McMaster Carr www.mcmaster.com
If you are looking for straight sided mechanical expansion plugs, check out the selection from Shaw Development.

Pipe Plugs