Ethylene propylene rubber (ngopfu ngopfu binary ethylene propylene rubber) yitirhisiwa hi xitalo tani hi viscosity index modifier (OVI kumbe VII) eka mafurha yotala ya hydrocarbon ku antswisa mafurha ya oyili eka mahiselo yale henhla nale hansi xikan’we naku endla leswaku oyili yi tirha ku antswa eka swiyimo swa static na dynamic.
Ethylene propylene rubber yilava matimba yale henhla yo tiya, pour point yale hansi xikan’we na shear stability index yale hansi loko yitirhisiwa tani hi modifier additive eka switolwa, petirolo na dizele.

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