The PDU wiper seal is a specialized lip-type scraper seal engineered to prevent external contaminants from entering hydraulic and pneumatic cylinders. Positioned at the rod entry point, this dust seal acts as the first line of defense in fluid power systems, scraping away dirt, moisture, and debris from the rod surface during retraction strokes.
The PDU seal features a single-acting lip profile with an optimized scraping edge geometry that ensures effective contaminant removal without damaging the rod surface. This design achieves an optimal balance between reliable scraping performance and low friction, minimizing wear on both the seal and the rod while maintaining smooth system operation.
Key Technical Specifications:
Pressure Rating: Designed for atmospheric pressure (non-pressure applications) with limited static pressure resistance at the lip
Maximum Speed: Up to 1 m/s (depending on material selection)
Temperature Range: -30°C to +100°C (standard material) with high-temperature variants available
Material Options: NBR (standard), FKM, TPU (Ulthathan®), and special blended compounds
Compatibility: Suitable for ISO 6195 / DIN 3760 standard grooves
What distinguishes the PDU series is its robust construction and versatile material selection. Standard NBR offers excellent oil resistance and cost-effectiveness. TPU provides exceptional abrasion resistance and cold flexibility, making it ideal for extreme temperature conditions. For high-temperature environments exceeding 100°C, FKM delivers superior thermal stability and chemical resistance.
Primary Applications: Hydraulic cylinders, pneumatic actuators, mobile equipment, agricultural machinery, construction equipment, and industrial automation systems where rod protection is essential for long-term reliability.
The PDU wiper seal offers straightforward press-fit installation into standard groove designs. By effectively keeping contaminants out and retaining lubricants within the system, this seal significantly extends component service life and reduces costly downtime.
Original text from: Hydraulic and Pneumatic Seals https://www.bszzseal.com/
