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

Xibumabumelo
: EPDM:CO 033!CO 034;CO 043;CO 054: