Comprising a terpolymer of ethylene, Propylene, And EPDM rubber, Diene monomers ensures that O-rings crafted from it demonstrate outstanding resistance Our general-purpose EPDM O-rings are created to endure water, Steam, Utilizing a, And ozone curing process based on sulfur These products are effective at temperatures reaching 120°C, In contrast to which can, Peroxide-cured O-rings handle up to 150°C C. EPDM proves to be highly beneficial in sealing brake systems that operate with fluids classified as glycol DOT 3 and 4 or dot 5 featuring a silicone foundation .