Ethylene-propylene (EPDM) offers superior resistance to water and steam. Our peroxide-cured EPDM O-rings are certified to NSF/ANSI Standard 61 and meet the FDA standard requirements for food-handling applications. EPDM O-rings that are suitable for applications ranging from -50 to 250°F. Those O-rings are recommended for use with acetone, automotive brake fluid, Skydrol, steam, and water.