Type III Melamine - Plasti-Grit® Plastic Blast Media is the hardest and most aggressive plastic media type. Melamine media blasting is ideal for mold cleaning; stripping paints, primers and 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.

Unit of Measure



N/A Melamine
Mesh Size1 N/A 30/40


N/A 250 lb Fiber Drums

MOH Hardness

N/A 4

Barcol Hardness

N/A 64 - 72

Selected Application

N/A Mold cleaning; difficult-to-remove paints and primers from hard materials such as engine parts, turbine blades, molds.



  • Non-toxic
  • No chemical solvents
  • No damage to finished surfaces
  • Consistent specific gravity
  • Long-lasting, recyclable
Plasti-Grit - The media of choice for dry stripping:
  • Aircraft - Supersized carriers, Helicopters, Single Engine planes and aircraft components
  • Trucks, Trailers, Vans, Cars (Including Corvettes), Rail cars, Motor homes, Buses, Subways, Bulk tankers, Bridges and other structures, engine parts, turbine blades
  • Encapsulated electronic components
  • Plastic molded parts
  • Composites and Soft metals
  • Production Lines - Surface preparation, Cleaning, Defect Correction
  • Re-manufacturing - compressors, engines, meters, telephones, traffic lights.

Testing Services

N/A Send test samples to Composition Materials Co., Inc., 125 Old Gate Lane, Milford, CT 06460. We will recommend the correct PLASTI-GRIT type and grit size as well as suggest blast parameters to achieve the best results.

  • 1 Speciality Sizes Available