Ethylene-Propylene Rubbers EPDM and EPT

Ethylene-propylene rubber is a synthetic hydrocarbon-based rubber made either from ethylene-propylene diene monomer or ethylene-propylene terpolymer. These monomers are combined in such a manner as to produce an elastomer with a completely saturated backbone and pendant unsaturation for sulfur vulcanization. As a result of this configuration, vulcanizates of EPDM elastomers are extremely resistant to attack by ozone, oxygen, and weather. 

Ethylene-propylene rubber possesses many properties superior to those of natural rubber and conventional general-purpose elastomers. In some applications, it will perform better than other materials, whereas in other applications, it will last longer or require less maintenance and may even cost less. 

EPDM has exceptional heat resistance, being able to operate at temperatures of 300-350°F (148-176°C), while also finding application at temperatures as low as — 70°F ( —56°C). Experience has shovm that EPDM has exceptional resistance to steam. Hoses manufactured from EPDM have had lives several times longer than that of hoses manufactured from other elastomers. 

This material may be processed and vulcanized by the same techniques and with the same equipment as those used for processing other general-purpose elastomers. As with other elastomers, compoimding plays an important part in tailoring the properties of EPDM to meet the needs of a 

Ethylene-propylene terpol)nner (EPT) is a synthetic hydrocarbon-based rubber produced from an ethylene-proplene terpolymer. It is very similar in physical and mechanical properties to EPDM. 

---