Complaint
| Description | Y-shaped seal(Lip Seal) | O-ring seal(Extrusion Seal) |
| Advantage | Seal section size is small, the installation groove can be designed as a monolithic groove; groove processing, seal installation easy,can be used as two-way seal (dual pressure) | Excellent seal performance; Low friction at low pressure; Automatically compensate after small amount of wear. |
| Disadvantage | Poor sealing performance; Easy to roll and twist, causing damage easily; The lower friction margin,the poorer sealing performance | One-way seal; Complex sealing structure,large size; Cause oil pressure between two seals; |
| Main Application | Small size slide valve; Piston and rod seals which allow a small amount leakage | Piston and rod seals which require high seal performance. |
