Overview
The Evergreen 5540322 packing U cup seal is a precision sealing component designed for use in packaging equipment and industrial automation systems. This single U-cup seal combines proven sealing geometry with durable construction to deliver consistent performance in demanding applications. The Evergreen 5540322 is engineered to provide reliable protection against leakage while minimizing friction and wear on connected components.
Key Features
- Single U-cup seal design for efficient rod and piston sealing
- Durable construction suitable for industrial packaging equipment
- Precise geometry to minimize friction and extend service life
- Engineered for reliable performance in dynamic sealing applications
- Made in the United States to industry quality standards
Technical Specifications
The Evergreen 5540322 is a single-lip U-cup seal designed for dynamic sealing in hydraulic and pneumatic systems. U-cup seals like this model feature a characteristic U-shaped profile that provides both inside and outside sealing surfaces, making them suitable for rod and piston applications. The seal material is engineered to maintain flexibility under pressure while resisting extrusion and wear. Standard U-cup seals operate effectively at pressures up to 400 bar (approximately 5,800 psi) in typical industrial applications, though specific pressure ratings may vary by material composition and configuration.
Typical Applications
- Packaging machinery and automation systems
- Hydraulic cylinder rod and piston sealing
- Pneumatic equipment requiring dynamic sealing
- Industrial equipment with linear motion components
- Food processing and beverage packaging systems
Compatibility & Replacements
Compatible With
- Standard hydraulic cylinders and actuators
- Pneumatic rod and piston applications
- Packaging machinery hydraulic systems
- Linear motion automation equipment
Replaces / Drop-In Replacement For
For specific cross-reference information and direct replacement models, verify compatibility with your system integrator before ordering. The Evergreen 5540322 is designed as an OEM replacement seal for compatible packaging equipment manufacturers.
Works With
- Hydraulic fluid systems (mineral and synthetic)
- Pneumatic air systems (ISO VG 32–68 lubricants)
- Standard ISO 5597:2010 seal housing configurations
- Common packaging equipment platforms




