Eastar™ Copolyester MN211, Natural contains a mold release for improved ejection. It is a brilliantly clear polymer with good impact strength, chemical resistance, dimensional stability, and low shrinkage rates. The slower rate of crystallization of this material makes it excellent for use in hot runner systems with valve or thermal gates. Please note that IMCD and Eastman have a medical risk assessment which we will guide you through to make sure to choose the right products for your application, i.e. Eastman products are not intended for use in body implant applications for >30days, any cardiac prosthetic device applications and specific other applications.