For low-speed rotating shafts, O-rings can usually be chosen as sealing rings. O-ring is the most common type of sealing ring, which is annular in shape and has good sealing and wear resistance. O-rings are commonly used for static sealing and dynamic sealing on low-speed rotating shafts. Its outline is circular, and assembly is relatively simple. There are also various materials to choose from, such as nitrile rubber, silicone rubber, fluororubber, etc., to adapt to different working environments.

However, it should be noted that different working conditions have different requirements for the rotating seal ring, so it is necessary to choose the appropriate specifications and models to ensure the sealing effect and service life. When choosing, factors such as speed, size, and material need to be considered. For example, if the speed of the shaft is high, it may be necessary to consider using U-rings or other sealing rings that are more suitable for high-speed rotation.

Overall, for low-speed rotating shafts, O-rings are a common choice, but the specific selection still needs to be comprehensively considered based on the specific working environment and requirements.