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Concrete Manhole Adapters for pipes entering manhole walls. |
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Concrete Manhole Adapters help eliminate leaks around pipe entering manhole walls, yet are flexible enough to permit lateral pipe movement without destroying seal integrity. It is particularly useful for pipe to which concrete will not adhere, such as plastic pipe. The CMA is made of elastomeric PVC, is corrosion proof and is unaffected by acid or alkali, however the CMA is subjected to many various conditions that are beyond the manufacturer's control. High ground water tables, quality of grout, workmanship and field conditions can affect its ability to seal. Discretion must be used in its application and installation. Due to the many varying factors that can influence the CMA's effectiveness as a seal, Fernco does not warrant this product as a positive water seal. |
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For CMA's larger than 12", see Large Diameter Waterstops |
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