40D thermoplastic elastomer A thermoplastic elastomer with a Shore hardness of 40D that can be printed at speeds of up to 45mm/sec. This rubber-like material can be extended up to 680% of its original dimensions. In addition, it has high impact strength at low temperatures, is abrasion resistant and has very good chemical resistance. All of the material's properties allow it to be used in areas that require frequent bending, gadgets, and as rubber machine parts and fasteners.