Steel pretreatment products

Our Steelcote 1400 process, a zirconium-based, non-phosphate pretreatment, provides excellent paint adhesion and corrosion resistance.

Our iron phosphate products also provide improved paint adhesion and corrosion resistance.


Circle-Prosco has a complete line of lubricants, including vanishing oils, for all stamping and forming operations.

Aqueous cleaners

 We offer a full line of alkaline, neutral, and acidic aqueous cleaners for all types of substrates and soils. This line of products also includes our low temperature cleaners.

Rust Preventatives

We also have RPs for both short and long term protection of steel and other substrates.

Aluminum pretreatment products

We have a complete line of non-chromate conversion coatings that provide corrosion resistance, paint adhesion, and hydrophilicity.

Circle-Prosco, Inc. manufactures a wide range of products for your applications. Please select one of the links below to learn more about our specific products.

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Grain Trailers Having Circle-Prosco Pre-treatment Chemistry

Products for Metal Finishing and Processing

Circle-Prosco, Inc. | 401 N. Gates Drive, Bloomington, IN 47404 | 812-339-3653