Internal Seal: 
Description:  The internal seal is comprised of an EPDM rubber gasket and metal band which expands to conform to the inner wall of the pipe.
  
Installation Instructions:  Ensure the area to be repaired is clean.  Mark the pipe on either side of the joint or damaged section in several places to ensure proper alignment.  The location of the marks will depend on the size of the seal.  Move the seal into place over the center of the joint or damaged section.  Tighten the internal expanding metal bands.
  
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Metal Pipe

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