O-Rings are a simple but very versatile sealing solution.Used predominantly in static applications but can be used in certain dynamic applications.Can be combined with a backup ring to increase the pressure tolerance and assist in resisting extrusion.Available in a wide variety of materials in a wide variety of sizes. EPDM 70A Duro - Precision Moulded. Used in a wide variety of applications that simple yet effective solutions.Recommended for static applications only. Hydraulic fluids, petroleum fuels and oils.Ideally suited to water environments.Not suited to exposure to petroleum based fluids and di-ester lubricants.Potable water grade EPDM options are available on request.