What is the function of Prep 88?

Prep 88 serves a critical role in surface preparation by effectively cleaning steel surfaces before the application of primer. In industrial settings, proper surface preparation is essential to ensure optimal adhesion of coatings and paints. By cleaning the steel, Prep 88 helps to remove contaminants such as oil, grease, dirt, and other residues that could interfere with the primer's ability to bond to the substrate. This step is crucial because a well-prepared surface leads to improved longevity and performance of the paint system.

The other options, while related to surface treatment and protection, do not accurately describe the primary function of Prep 88. Sealing steel surfaces or removing rust stains would require different products or processes specific to those needs, and protection from weather falls under the function of paint or coatings after proper surface preparation has been completed. Thus, the focus of Prep 88 is squarely on cleaning the steel, making it ready for the next steps in the coating process.