The DP-Type Piston Rod Seal represents a specialized dual-element sealing solution engineered for demanding applications where conventional single seals prove inadequate. Characterized by its integrated two-component architecture, this seal delivers exceptional performance in challenging operating environments where pressure extremes, contamination, and reliability are critical factors.
Dual-Function Geometry: Combines a primary sealing element with an integrated scraper/wiping component in a compact unitary design
Advanced Material Systems: Typically utilizes engineered polyurethane compounds reinforced with specialized additives for enhanced wear resistance
Pressure-Adaptive Profile: Features optimized lip geometry that responds dynamically to system pressure variations
Superior Contamination Exclusion: Front scraping element effectively removes particulate matter before it reaches the primary sealing surface
Enhanced Pressure Tolerance: Maintains sealing integrity across extended pressure ranges without requiring additional support elements
Low Friction Operation: Optimized contact geometry reduces breakout force and minimizes stick-slip phenomena
Extended Service Life: Exceptional resistance to abrasion, extrusion, and chemical degradation
Space-Efficient Configuration: Eliminates the need for multiple separate sealing components
Simplified Installation: Single-piece design reduces assembly complexity and potential installation errors
Reduced Maintenance Requirements: Durable construction minimizes downtime and replacement frequency
Broad Compatibility: Suitable for various hydraulic fluids including petroleum-based, synthetic, and water-based media
Pressure Range: 0-40 MPa (continuous operation)
Temperature Range: -40°C to +110°C (dependent on specific material formulation)
Surface Speed: Up to 1.0 m/s (depending on pressure and temperature conditions)
Rod Finish Requirements: Rz 2-6 μm (optimized performance range)
Industrial Hydraulic Presses
High-Cycle Production Machinery
Mobile Construction Equipment
Marine Hydraulic Systems
Forestry Machinery
Mining Equipment
When specifying DP-Type seals, critical evaluation should include:
System pressure characteristics and peak pressure events
Environmental contamination levels
Fluid compatibility and temperature extremes
Rod surface quality and hardness
Required service life and maintenance intervals
Proper installation requires attention to:
Clean, chamfered gland geometry
Appropriate installation tools to prevent damage
Verification of seal orientation
Elimination of twisting during assembly
DP-Type seals are frequently paired with:
High-performance rod wipers for extreme environments
Bearing elements for lateral load support
Specialized guide rings for alignment stability
The DP-Type piston rod seal represents an optimized solution for applications where reliability, contamination control, and compact design converge as primary engineering priorities.
Original text from: pneumatic seal https://www.bszzseal.com/
