TYPE III MELAMINE - PLASTI-GRIT® PLASTIC BLAST MEDIA These blasting abrasives are generally used for paint stripping, deburring, and cleaning. They have a high stripping rate and are used in a wide variety of industries. They are manufactured from 100% recycled materials at our solar-powered plant in Milford, CT. Melamine is the hardest and most aggressive plastic media type, making it effective for mold cleaning; stripping paints, primers & coatings from steel and hard surfaces; and removing grit & grime from engines, turbines and parts. In mold cleaning, Melamine does not damage molds and is therefore an excellent replacement to glass beads and other hard abrasives. Type III meets the requirements of Mil-Spec MIL-P-85891A and is approved for use by the U.S. Army, Navy and Air Force.