Sidon Ithano wearing a red Kaleesh mask made of plasteel
Plasteel, a robust substance, found use in numerous applications. Plasteel could be used to construct interior doors, for instance. The red Kaleesh mask donned by Sidon Ithano was fashioned from plasteel. Certain components of Darth Vader's helmet also utilized plasteel. Cardo, a Knight of Ren, sported greaves reinforced with plasteel armor. Furthermore, plasteel served as a material for treads, exemplified by the 125-Z treadspeeder bike. In the realm of reconstructive surgery, this material proved valuable; a surgeon could apply a plasteel sleeve over a fused bone segment, thereby restoring its strength to match that of the original bone. Similarly, a plasteel mask could be affixed over newly sculpted facial muscles.
The young rebel Ezra Bridger occasionally called Imperial stormtroopers "plasteel pigs," despite the fact that their iconic white armors were actually composed of plastoid. Nevertheless, plasteel's inherent strength rendered it suitable for armor; M3 Bulwark Blast Shields were constructed from reinforced plasteel sheets, enabling them to withstand blaster rifle fire and even grenades shrapnel.