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- ItemTest Ball Plug
- Nominal Size21"
- Min. Dia.18.85"
- Max. Diameter21.38"
- Max. Back Pressure30 ft. of Head
- Required Inflation Pressure25 psi
- Deflated Size26.00"L x 18.20"D
- Material of ConstructionNatural Rubber
- For Use InBlocking Sewer Flow Or Conducting Sewer Air Tests
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