IUN/UNS/UHS PU U-cup Piston Hydraulic Rod Oil Seal Rings ID40mm-250mm

1. High-Performance PU U-Cup Design for Heavy-Duty Hydraulic Systems

Engineered with a robust PU (Polyurethane) U-cup profile, these seals deliver exceptional sealing performance in high-pressure hydraulic applications. The U-shaped geometry ensures tight contact with the piston rod, preventing oil leakage and maintaining system efficiency under extreme pressure and dynamic motion. Ideal for hydraulic cylinders, construction machinery, and industrial equipment requiring reliable sealing.

2. Durable Material for Harsh Environments

Manufactured from premium-grade polyurethane (PU), these seals offer superior resistance to hydraulic fluids, chemicals, abrasion, and temperature fluctuations. The material’s flexibility and resilience ensure long-term durability, even in harsh operating conditions, reducing downtime and maintenance costs.

3. Versatile ID Range for Broad Applications

Designed with an inner diameter (ID) range of 40mm to 250mm, these seals accommodate a wide variety of hydraulic cylinder and rod sizes. This scalability makes them suitable for applications ranging from compact industrial machinery to large-scale construction equipment, presses, and heavy-duty hydraulic systems.

4. Enhanced Leak Prevention and Load-Bearing Capacity

The IUN/UNS/UHS series combines radial compression and axial load-bearing capabilities, effectively sealing under high-pressure cycles and bidirectional motion. This design minimizes wear on piston rods and extends the lifespan of hydraulic systems by maintaining fluid integrity and reducing energy loss.

5. Easy Installation and Cost-Effective Maintenance

Featuring a split design and simple installation process, these seals reduce downtime during equipment maintenance. Their durable construction and resistance to deformation ensure reliable performance over extended periods, lowering replacement costs and operational disruptions.