A na-eji roba Ethylene propylene (karịsịa ọnụọgụ ethylene propylene rubber) n'ọtụtụ dị ka viscosity index modifier (OVI ma ọ bụ VII) maka ọtụtụ mmanụ hydrocarbon iji mee ka mmanu mmanu mmanu mmanu na oke okpomọkụ na nke dị ala ma mee ka mmanụ ahụ rụọ ọrụ nke ọma ma na ọnọdụ siri ike.
Ethylene propylene rọba chọrọ ike njupụta dị elu, ebe mgbaba dị ala na nkwụsi ike dị ala mgbe ejiri ya dị ka ihe mgbakwunye maka mmanụ mmanu, mmanụ ụgbọala na mmanụ dizel.

Nkwanye:
EPDM:CO 033;CO 034;CO 043;CO 054;