The UDR-type piston rod seal is a proprietary, innovative sealing solution engineered specifically for demanding hydraulic and pneumatic piston rod applications. It features a unique asymmetric design that integrates multiple sealing and functional elements into a single, compact unit.
Core Design Features & Advantages:
Asymmetric Lip Profile: The primary sealing lip is meticulously angled and loaded to provide superior sealing pressure during both static and dynamic conditions, significantly reducing leak paths.
Integrated Dust Lip: An outer auxiliary lip effectively excludes contaminants like dirt, dust, and moisture from the system, protecting the main seal and cylinder internals, thereby extending service life.
Optimized Geometry: The UDR design incorporates specially contoured heels and recesses. These features:
Minimize Friction: Reduce breakout and running friction, leading to smoother operation and higher efficiency.
Manage Lubrication: Create optimal micro-reservoirs for lubricant film retention, ensuring consistent lubrication of the sealing interface.
Prevent Extrusion: Enhance resistance to gap extrusion under high pressure, especially when used with appropriate anti-extrusion rings.
Material Versatility: Can be manufactured from advanced polyurethanes (AU/TPU), Nitrile rubber (NBR), or other engineered compounds to suit a wide range of operating media, temperatures, and environmental conditions.
Key Performance Benefits:
Ultra-Low Leakage: Ensures near-zero external leakage, maintaining system cleanliness and hydraulic fluid conservation.
Extended Service Life: Superior wear resistance and contaminant exclusion dramatically reduce premature failure.
Broad Compatibility: Excellent performance with various hydraulic fluids, lubricants, and compressed air.
Robust Pressure Handling: Effective sealing across a wide pressure range, from low-pressure applications to high-pressure cycles.
Space Efficiency: Combines multiple functions in one part, simplifying groove design and assembly.
Typical Applications:
Ideal for hydraulic cylinders in construction equipment (excavators, loaders), industrial machinery, agricultural equipment, and heavy-duty pneumatic cylinders where reliable rod sealing is critical for performance, environmental protection, and total cost of ownership.
In summary, the UDR piston rod seal represents a purpose-built, high-performance sealing solution that moves beyond standard designs by harmonizing sealing efficacy, contamination defense, and friction optimization into one robust, reliable component.
Original source: Hydraulic seal https://www.bszzseal.com/
