Types of common sealing rings for rotary joints

The rotary joint is a sealed transmission device. Depending on the environment of use and the requirements of the transmission medium, different sealing rings are selected to seal the grease-lubricated gap. The seal ring prevents debris or dust from entering the joint, reducing friction and reducing heat and wear. However, the sealing ring is a fragile component of the rotating joint, which not only bears the pressure of the internal medium, but also withstands the friction between the foreign and the casing. Here is a brief introduction to the common sealing ring for rotary joints.

Usually, the rotary joint uses a graphite sealing ring and a graphite material is used in the sintering process to form a sealing material with high wear resistance. The silicon carbide graphite ring is a ring-shaped sealing material made of silicon carbide material. Alumina seal rings used in high temperature rotary joints, also known as ceramic seal rings. Medium sealing ring made of alumina material with high temperature resistance and high strength. A relatively heavy carbide seal ring made of cemented carbide.

Sealing rings of different materials play different roles on the swivel joints and can only be used to their full potential. If the user finds a slight leak in the rotary joint, it is necessary to promptly check the wearing parts such as the seal ring and replace it in time.