AEM rubber molded products
Ethylene acrylate copolymers, also called AEM rubbers, are synthetic rubbers composed of both ethylene and acrylic monomers. The ethylene imparts good low temperature properties, while the acrylic portion improves the oil resistance. The combination of a saturated backbone with polar side groups also provides good resistance to heat, ozone (weathering), and many chemicals.
In general, AEM’s resistance to ozone and weathering is superior to (NBR) and its cold temperature performance is better than that of ACM. Besides excellent heat and ozone resistance, AEMs have outstanding vibration dampening and good dynamic and abrasion properties over a wide temperature range. However, water and moisture resistance is only fair, as is the resistance to dilute acids and alkalis. Furthermore, AEMs are much more expensive than most standard elastomers including NR, NBR, CR, EPDM, and SBR.