The PDU-type piston rod seal is a precision-engineered, dual-function sealing component specifically designed for pneumatic cylinder applications. This integrated solution masterfully combines rod sealing and dust exclusion in a single, compact unit—eliminating the need for separate seal and wiper components.
Two Functions, One Component
The PDU seal represents intelligent design simplification. By integrating both sealing and wiping capabilities into one precision-molded part, it achieves two critical objectives simultaneously:
-
Reliable Pneumatic Sealing: The primary sealing lip effectively prevents compressed air leakage during cylinder operation, maintaining system pressure and ensuring consistent actuator performance.
-
Active Contaminant Exclusion: The integrated dust lip aggressively scrapes away dirt, dust, and moisture from the piston rod during retraction, protecting internal components from abrasive wear and premature failure.
Space-Saving Engineering
By combining two functions in one component, the PDU seal enables more compact cylinder designs. Engineers can reduce gland dimensions, shorten overall cylinder length, and create streamlined equipment without compromising sealing performance or reliability.
Material Options
Operating Parameters
-
Maximum Pressure: 1.0 MPa (10 bar)
-
Maximum Speed: 1.0 m/s
-
Media: Compressed air (lubricated or oil-free)
-
Installation: Directional—must be installed in correct orientation
Why Choose PDU?
-
Simplified Assembly: One component instead of two means faster installation and reduced risk of assembly errors.
-
Reduced Inventory: Fewer part numbers to stock, simpler procurement, lower costs.
-
Compact Design: Enables smaller cylinder glands and more space-efficient equipment.
-
Proven Geometry: Precision-calculated profile based on extensive testing ensures consistent performance cycle after cycle.
-
Material Flexibility: Choose NBR for standard duty or FKM for high-temperature applications.
Standard Sizes
Available in metric rod diameters from 4 mm to 45 mm, with corresponding housing dimensions precisely specified for reliable installation.
Typical Applications
-
Industrial pneumatic cylinders
-
Compact actuators and grippers
-
Pneumatic control valves
-
Packaging machinery
-
Automation equipment
-
Material handling systems
The PDU Piston Rod Seal is the intelligent choice when space is limited but performance cannot be compromised—proven dual-function reliability in one precision component.
Original text from: pneumatic seal https://www.bszzseal.com/
