Cherne® Clean-Seal® Pipe Plug, Pneumatic, 4 in Pipe, 13 psi Working, Natural Rubber, 8.50 in L x 4.50 in D
Plug holds back up to 13 psi or 30 ft of head pressure Plug design keeps work area and plumber dry no backsplash Seals both plastic and hard to seal cast iron threaded cleanouts Easy to install Removable snifter valve inflation fitting is replaceable Made from long-lasting natural rubber Seals both cast iron and plastic pipe