Cherne® 276348 Plumbing Test-Ball Plug, 3 to 4 in, s, 40 psi, Natural Rubber

Item Features

• Use to block flow (water DWV test) or as a back plug for sewer air testing
• Seals both round and out-of-round pipe
• Zinc-plated steel chain and ring handle acts as an anchor to prevent plug from sliding down a line
• Natural rubber provides great sealing properties as well as excellent expansion and memory
• 28 to 425 in Usage Range