◈ Dongsung Polyurethane Elastomers are the two innovative component systems which exhibit excellent physical properties , durability and processing workability. Typical uses for Polyurethane Elastomers are rolls , caster wheels , sprockets and various industrial parts. ◈ Dongsung Polyurethane Elastomers are classified as Ester and Ether types and have the below characteristics. ◈ Dongsung Chemical has various Elastomer grades which in hardness range from 35 Shore F to 80 Shore D.