Eraser Erasure PVC-free and dust-free. The quality of the eraser and the use of the right eraser are crucial for optimum erasing results. There are basically two different materials from which erasers are made: Rubber and plastic. Faber-Castell dust-free plastic erasers do not contain any hazardous substances such as phthalates. The balanced plastic mixture of the quality erasers ensures smooth and smudge-free erasing. With little eraser waste, eraser residue rolls up, allowing clean and smudge-free erasing.