The following materials were used to manufacture the FKM/
HNBR blend in this study. FKM rubber (G-902, DAKIN, Osaka,
Japan) and HNBR rubber (Zetpol-2010, JEON, Japan) were used as
raw rubbers. As there is a blend effect by selecting the same
crosslinking type of two materials, material which is peroxide
cross linking type was selected to improve the compressed
permanent shortening ratio and heat resistance compared with
that of the sulfur cross linking type.