Cretex Specialty Products

Cretex Specialty Products, the innovator and leading manufacturer of Internal and External Manhole Chimney Seals, has been providing quality products for 38 years with a focus on stopping wet weather inflow and infiltration in sanitary sewer manholes.

The first Cretex Internal Manhole Chimney Seals were installed in Milwaukee Wisconsin in 1981.  Hundreds of thousands of installations to date, make the Cretex Manhole Chimney Seal the most long term, cost effective solution for sealing the frame-chimney joints in manholes.

Building on the success of the Chimney Seals, other products were developed including Internal Manhole and Pipe Joint Seals, Exterior Joint Wraps and PRO-RING™.  PRO-RING™ is a lightweight manhole grade adjustment system made from Expanded Polypropylene (EPP).  PRO-RING™ weighs 95% less than concrete, has excellent chemical resistance and is traffic rated.