Cretex Specialty Products, in Waukesha, Wisconsin

Cretex Specialty Products, located in Waukesha, WI, was established in September 1983 to market the Cretex Chimney Seals to the municipal and engineering community for sealing the frame chimney area of both existing and newly constructed manholes.

The inflow of stormwater into any sewer system can be extremely costly. Cretex Chimney Seals are designed to reduce surcharging/bypassing and lower pumping and treatment costs in a sanitary sewer system.

In storm sewer systems, Cretex Chimney Seals protect from infiltration of surrounding soil which in turn can undermine pavements. Cretex Specialty Products exclusive family of seals stops this type of inflow, and the pavement settlement caused by inflow, while providing a flexible seal between the manhole frame and masonry chimney and cone.

Best of all, all of their rubber seals come with an exclusive 25 or 50-year warranty.