Y-RING

Standard for using Y/U-shaped sealing ring and retaining ring

Scope of application of retaining rings

(1) The function of the retaining ring

When using seals, if there is a large extrusion gap due to pressure, the heel of the seal may be squeezed out and cause damage. (Figure B-1) At this point, a retaining ring is needed to suppress the extrusion of the seal and improve its durability. (Figure B-2)

(2) Extrusion prevention mechanism

When pressure is applied, the retaining ring will compress and deform, and the gap will become smaller, which can suppress the extrusion of the sealing element at the heel (Figure B-3, 4)

(3) The use of retaining ring materials

In this way, the material of the retaining ring needs to have the characteristics of being easy to compress and deform under pressure, and difficult to be extruded. In addition, during compression deformation, it moves due to contact with the opposite sliding surface, so wear resistance and low friction characteristics are also important. WINSEAL.NET's product materials include polytetrafluoroethylene PTFE, high hardness polyurethane XPU, polyurethane PU, nitrile rubber NBR, etc.

 

Example of Standard Structure Application of Retaining Ring in Oil Cylinder Use

 

JIS standard cylinder low-pressure hydraulic cylinder: below 7MPa

Application Example 1

① Dust seal ② piston rod seal ③ piston seal ④ wear-resistant ring ⑤ wear-resistant ring

 

Application Example 2

① Dust seal ② piston rod seal ③ piston seal ④ wear-resistant ring ⑤ wear-resistant ring

 

JIS standard cylinder medium pressure hydraulic cylinder: below 14MPa

Application Example 3

① Dust seal ② retaining ring ③ piston rod seal ④ piston seal ⑤ wear-resistant ring

 

Application Example 4

① Dust seal ② retaining ring ③ piston rod seal ④ piston seal ⑤ retaining ring ⑥ wear-resistant ring

 

JIS standard cylinder high-pressure hydraulic cylinder: below 21MPa

Application Example 5

① Dust seal ② Wear ring ③ Retaining ring ④ piston rod seal ⑤ Wear ring ⑥ piston seal

 

Application Example 6

① Dust seal ② Wear ring ③ Retaining ring ④ piston rod seal ⑤ piston seal ⑥ Active retaining ring ⑦ Wear ring