Cherne® Multi-Size Underground Test-Ball® Plugs are designed for blocking flow while allowing for maintenance in sanitary and storm sewer systems. Cherne Industries is a global leader in pipe plug, blocking and testing.

• Multi-Size Underground Test-Ball® Plug for 8 in - 12 in
• One plug fits multiple pipe diameters
• Made of natural rubber for excellent expansion and memory
• Seals both round and out-of-round pipe
• Removable inflation valve can be replaced if damaged or replaced with quick disconnect fitting
• Use to block flow or as a back plug for sewer air testing