EPDM O-ring is a type of seal made from ethylene propylene diene monomer (EPDM) rubber. It has excellent resistance to temperature extremes, UV light, and harsh chemicals, making it suitable for a wide range of sealing applications. EPDM O-rings also have good electrical insulation properties and are relatively cost-effective compared to other elastomers. They are commonly used in applications such as water treatment, solar panels, and food processing. EPDM O-rings are available in various sizes and can be customized to meet specific sealing requirements.