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Cretex Specialty Products

About Cretex Specialty Products

Affiliated with the Cretex Companies, Inc., Cretex Specialty Products, located in Waukesha, Wisconsin, has provided quality manhole solutions since 1983, offering solutions and cost savings for inflow and infiltration with Chimney Seals.
Cretex has been developing quality products that stand the test of time with our 25 and 50-year warranties.
Creating the most superior manhole grade adjustment systems available anywhere, the most advanced alternative to concrete grade rings.

Manhole Rehabilitation

Chimney Rehabilitation

LSS Internal Chimney Seal

The LSS sleeve conforms to the applicable material requirements of ASTM C-923. It has a minimum thickness of .130 inches for durability and resistance to tearing and puncturing. The one-piece channeled expansion bands are 1-3/4 inches wide and are fabricated from high-quality, corrosion-resistant, 16 gauge stainless steel.

X-85 External Watertight Chimney Seal

The high-performance watertight seal is used between the manhole casting and the concrete cone.

Internal Pipe Joint Seal

The Internal Joint Pipe Seal are watertight compression seals that reduce groundwater infiltration, increasing waste-water treatment capacity in underground pipes. Made of 7.5″ high-quality rubber, Internal Joint Seals meet or exceed the physical requirements of ASTM C-923.

External Joint Pipe Wrap

Cretex External Joint Pipe Wrap collars provide a permanent external seal against infiltration. The wrap is positively sealed and can be used for mitigation or new construction. 



PRO-RING products provide a proven alternative to concrete grade or adjustment rings and are the most advanced concrete ring alternative manhole grade-adjustment system available anywhere. Made of Expanded Polypropylene, PRO-RING is known for its ability to stand up to the harshest conditions without damage or deformity for 50 years. Installed on tens of thousands of manholes and catch basins throughout the U.S. and Canada, these lightweight rings are renowned for their exceptional strength-to-weight ratio, durability, chemical resistance, and long service life under the most demanding conditions.


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