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. Viton 75A 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