The IUIS-type piston rod seal is a precision-engineered U-ring sealing element specifically designed for hydraulic cylinder piston rods. It represents a compact, high-performance sealing solution widely adopted in industrial and mobile hydraulic applications.
Design Features:
– Compact Section Design: Features a small cross-section profile that allows installation in integrated grooves, making it ideal for space-constrained cylinder designs .
– Anti-Back Pressure Protection: Engineered with special design considerations to prevent damage caused by back pressure buildup during operation .
– Optimized Lip Geometry: Precision-designed asymmetrical sealing lips provide effective fluid sealing while maintaining proper lubrication film for reduced friction.
– Single-Piece Construction: Integrates the sealing function into one compact component for simplified installation and maintenance.
Material Specifications:
– Standard Material: NOK U801 polyurethane (PUR) for general-purpose hydraulic applications .
– Heat-Resistant Option: NOK U641 material available for applications requiring enhanced thermal stability .
– Performance Range: Operates effectively in temperatures from -35°C to 110°C, with pressures up to 31.5MPa (approx. 315 bar) .
– Hardness: Typically 90-95 Shore A for optimal balance of sealing performance and extrusion resistance .
– Fluid Compatibility: Suitable for general petroleum-based hydraulic oils .
Key Advantages:
– Zero-Leak Performance: High sealing efficiency even under dynamic pressure fluctuations .
– Extended Service Life: Robust polyurethane construction provides exceptional wear resistance and durability .
– Low Friction Design: Minimizes heat buildup and reduces energy consumption during operation .
– Extrusion Resistance: Can be used with appropriate backup rings for higher pressure applications; detailed extrusion gap guidelines available for proper selection .
– Easy Installation: Precision design simplifies maintenance and retrofitting in standard gland designs .
Typical Applications:
The IUIS piston rod seal excels in a wide range of hydraulic applications :
– Construction Machinery: Excavators, bulldozers, cranes, and dump trucks
– Agricultural Equipment: Tractors, harvesters, and irrigation systems
– Industrial Machinery: Hydraulic presses, injection molding machines, and material handling equipment
– Mobile Hydraulics: Forklifts, logging equipment, and refuse vehicles
– General Engineering: Lift equipment, industrial cylinders, and standard hydraulic systems
Installation Considerations:
– Surface Finish: Rod surface should be finished by buffing to 0.8 to 1.6 μmRz (0.2 to 0.4 μmRa) for optimal performance and seal life [citation].
– Backup Ring Compatibility: For high-pressure applications (up to 42MPa), compatible bias-cut backup rings (BRT2 19YF or BRN2 80NP) are available to prevent extrusion .
– Groove Design: Available in a comprehensive range of standard sizes with specified housing dimensions for reliable installation .
In summary, the IUIS Piston Rod Seal is a compact, high-performance U-ring sealing solution trusted by global industries for reliable rod sealing in hydraulic cylinders. Its combination of space-efficient design, anti-back pressure protection, and durable material construction makes it an ideal choice for demanding applications requiring leak-free performance and extended service life.
Original source: Hydraulic seal https://www.bszzseal.com/
