Cretex Specialty Products

Cretex Specialty Products Cretex Specialty Products, for over 30 years, the leader in solving manhole inflow and infiltration,

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.

Video Alert! Get an in-depth look at what the PRO-RING is made of, where the PRO-RING is manufactured, the difference be...
06/02/2026

Video Alert! Get an in-depth look at what the PRO-RING is made of, where the PRO-RING is manufactured, the difference between the Grade, Finish and Angle rings and see how the rings adhere together.

Thanks to Lincoln Winwater for producing this video!

PRO-RING™ is the only manhole grade adjustment system made from Expanded Polypropylene (EPP). PRO-RING™ products provide a proven alternative to concrete gra...

05/25/2026

Today we honor those who gave everything for our country. On Memorial Day, we remember the brave men and women of the United States Armed Forces who made the ultimate sacrifice in service to our nation. Their courage, dedication, and selflessness will never be forgotten. We are grateful for their service and we honor their memory.

05/21/2026

Want to see how much time your crew could save on manhole adjustments? Schedule a free field demo of the PRO-RING Manhole Adjustment System and watch the installation process step-by-step with guidance from the Cretex team. You’ll see how PRO-RING helps crews:

• Install faster
• Reduce future repairs
• Stop inflow and infiltration

Sometimes the best way to understand the difference is to see it in action.

https://cretexseals.com/request-a-demo/

Tim's Tip for May! In manhole maintenance, small inefficiencies add up fast. Heavy materials, complicated installations,...
05/18/2026

Tim's Tip for May! In manhole maintenance, small inefficiencies add up fast. Heavy materials, complicated installations, and repeat repairs can turn what should be a quick adjustment into hours of extra work.

When evaluating maintenance approaches, look for solutions that help crews work faster, safer, and with fewer return visits. Reducing installation time and minimizing future repairs can make a big difference in keeping projects on schedule—and budgets under control. Because in infrastructure maintenance, time really is money.

05/14/2026

Every extra minute on a repair job site costs something.

Traffic Control. Delivery Delays. Rerouting Delays. Labor. Equipment.

Infrastructure work moves faster when the solution is simple, durable, and built to last. Because in this line of work, time isn’t just time—it’s money.

https://cretexseals.com/products/pro-ring-concrete-grade-ring-alternative/

Address

Waukesha, WI
53188

Opening Hours

Monday 7am - 4pm
Tuesday 7am - 4pm
Wednesday 7am - 4pm
Thursday 7am - 4pm
Friday 7am - 4pm

Telephone

+12625428153

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