Installation Instructions

August 8,
2008
Concrete Manhole Adapters
for pipes entering manhole walls.
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.
For CMA's larger than 12",
see Large Diameter Waterstops
Part No. Size
4 CMA 4" (101mm)
6 CMA 6" (152mm)
8 CMA 8" (203mm)
10 CMA 10" (254mm)
12 CMA 12" (304mm)
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