Dumbbell Ring

The dumbbell ring (PWL) static seal is an advancement of the traditional O-ring and retaining ring radial static structure. Its sturdy symmetrical cross-sectional structure and extrusion-resistant polyurethane material make it easy to install and improve sealing performance under pressure fluctuations, resulting in a longer service life. The dumbbell ring has two sealing areas, providing double protection and reducing leakage. Due to the use of extrusion-resistant polyurethane material, there is no need for a plastic retaining ring.