Epichlorohydrin rubber (CO, ECO, GECO)

Hydrin® is a registered trademark of Zeon Chemicals for polyepichlorohydrin rubber materials. Epichlorohydrin rubber is also called epichlorohydrin rubber. Epichlorohydrin rubber can be in three forms: homopolymer (CO), copolymer (ECO, GCO) and terpolymer (GECO). Epichlorohydrin rubber is a saturated polar rubber. Its heat resistance is better than NBR, its oil resistance is similar to that of NBR with 40% ACN content, its low temperature resistance is better than NBR, its air tightness is 3 times that of IIR, its ozone aging resistance is better than that of diene rubber, it is difficult to burn (self-extinguishing when away from fire), its water resistance is similar to that of NBR, it has a large compression permanent deformation, its conductivity is about 100 times that of NBR, its tensile strength is 18-20MPa, and its elongation is about 350%. Its acid resistance is fair, but its alkali resistance is poor.

Curing system

Sulfur bridging and peroxide bridging

Standard ECO compounds are usually peroxide bridged. However, they can also be sulphur bridged to improve elasticity in dynamic systems, although this reduces heat resistance and results in poor compression set.

Temperature range

-40 ~ 125℃, up to 135℃

Hardness range

Shaw A50 degrees to 80 degrees

Color

Black, or customer specified color

Application

Epichlorohydrin rubber is basically used in automobile and liquefied petroleum and liquefied natural gas system seals.