Title: PDU Series Specialized Piston Rod Seal
Abstract:
The PDU series is a dedicated high-performance piston rod seal engineered for demanding hydraulic applications. Featuring a compact, robust design, it integrates superior sealing, pressure management, and contaminant exclusion into a single, reliable unit. This document summarizes its design principles, key attributes, and typical uses.
1. Introduction
Effective piston rod sealing is essential for system integrity, efficiency, and longevity in hydraulic cylinders. The PDU series addresses this need with an advanced, space-saving design that ensures reliable performance under high pressure, dynamic motion, and harsh environments.
2. Design & Core Features
The PDU seal employs a uni-body, multi-functional design combining a primary sealing lip and an integrated anti-extrusion element.
Primary Sealing Lip: Made from high-grade polyurethane (PU) or other engineered elastomers. Its precision geometry ensures an optimal sealing line, providing excellent leakage control with low friction.
Integrated Anti-Extrusion Component: A reinforced rigid ring molded or assembled within the seal structure prevents lip deformation and extrusion under high pressure and in wide clearance gaps.
Dual-Function Geometry: The profile is optimized to manage pressure from the internal side (system pressure) effectively. It also aids in fluid film control, promoting lubrication and reducing wear.
3. Performance Advantages
High-Pressure Capability: Withstands continuous high pressures and pressure spikes due to its built-in anti-extrusion support.
Excellent Sealability: Delivers minimal leakage, even after prolonged static periods or at low pressure.
Durability & Wear Resistance: Advanced materials provide strong resistance to abrasion, extrusion, and common hydraulic fluids.
Compact & Reliable: The single-unit design simplifies installation, reduces gland space requirements, and lowers the risk of assembly errors compared to component stacks.
Effective Operation: Maintains consistent performance with low breakout and running friction.
4. Material Options
Standard: Polyurethane (AU/EU) for general high-wear applications.
Specialized: HNBR or FKM for enhanced temperature or fluid compatibility.
5. Primary Applications
Ideal for heavy-duty hydraulic cylinders in:
Construction & Mobile Equipment
Industrial Machinery (Presses, Metal Forming)
Material Handling Equipment
Applications requiring robust performance in compact spaces
6. Conclusion
The PDU series piston rod seal offers a reliable, high-performance sealing solution through its integrated and durable design. It is an excellent choice for extending service life and maintaining system efficiency in challenging hydraulic applications.
Original text from: pneumatic seal https://www.bszzseal.com/
