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Foam Bag System
The Foam Bag seals the empty space inside of a pipe by introducing a special fabric bag. Foam is mixed in a plastic container, poured into a special timed release cartridge gun and pumped into the Foam Bag. The foam swells to fill the bag and then oozes out through the special semi-porous surfaces of the bag to roll any fluids, including water, out of the way. It then combines with any loose debris and bonds to the pipe walls to produce a seal.