POLYHARD® Type III along with a hollow blast nozzle makes cleaning inside diameters possible.  

POLYHARD® - TYPE III - MELAMINE

Coatings being removed form inside diameter.

Hollow Blast Nozzle

Manufactured from melamine, this media is the most aggressive formulation of POLYMEDIA®. It is formulated to be fast acting and approaches hard abrasives in surface finishing capabilities. TYPE III is not harmful to blast cleaning equipment or cabinetry despite its high degree of aggression. It does not wear out tooling. Substantial savings are realized by eliminating the need to purchase expensive replacement parts. This media offers a fast, cost effective alternative to other removal methods.