There are many types of seals, such as U-shaped seals and Y-shaped seals. The type is different, the function and function of the sealing ring are also different. Many people do not understand the difference between these two types of seals? Today, Dongsheng will give you the answer.

The cross-section of the Y-shaped sealing ring is Y-shaped, which is a typical lip-shaped sealing ring, which is widely used in reciprocating dynamic sealing equipment. The U-shaped sealing ring has a symmetrical sealing lip, which is used for a single-function or double-function standard hydraulic cylinder with a piston rod or a piston. The U-shaped sealing ring and Y-shaped sealing ring for piston seal are slightly different in appearance. The lip of the U-shaped sealing ring is long, and the bottom end and the lip are the same thickness or slightly thicker than the lip. The lip of the Y-shaped sealing ring is short, but the bottom end is thick. In order to better get rid of the U-shaped sealing ring, it is often not stable and designed. In addition, the compressive strength of the lip can be expanded to prevent tearing at the root of the lip. .

They all rely on two lips to work, and there is no obvious difference in sealing performance. Therefore, in some cases, the Y-shaped sealing ring is also called the U-shaped sealing ring, which is a type of sealing ring designed for the sealing of the piston, plunger pump and piston rod in the hydraulic transmission system.

Y-type vulcanized rubber sealing ring is made of high toughness (85 Shore A) nitrile rubber. In order to better obtain the original seal, in the case of designing the sealing lip of the Y-shaped sealing ring, there is a certain clearance fit for the inner and outer lips. When the sealing ring is installed in the pipe trench, the sealing lip only touches the metal material at the bottom end of the drag surface pipe trench, resulting in a certain amount of pre-stressed steel bar, which achieves the actual effect of large sealing.

From the above frame diagram, the difference between U-shaped seal and Y-shaped seal can be visualized. The above is the analysis of some characteristics of the U seal ring and the Y type seal ring. If you must master the seal ring of the hydraulic cylinder, please pay attention to the official website of Dongsheng Sealing.