Concrete Manhole Adapters

Concrete Manhole Adapters

Improves seals when pipes are grouted into concrete structures

Concrete Manhole Adapters (CMA’s) are flexible enough to permit lateral pipe movement without destroying seal integrity.


  • Improves Seal
  • pipe to which concrete will not adhere, such as plastic pipe.
  • Compatible with Plastic and Cast Iron Pipes to Concrete Manhole Connections
  • Material Certified to ASTM D5926
  • CMA's are subjected to many various conditions that are beyond the manufacturers control, such as high ground water tables, quality of grout, workmanship and field conditions that can affect its sealing ability. Discretion must be used in its application and installation. Fernco does not warrant this product as a positive water seal


  • Made of elastomeric PVC
  • Corrosion proof and is unaffected by acid or alkali.