SSA-Type Piston Rod Seal
Self-Compensating, High-Performance Sealing Solution
Overview
The SSA-Type Piston Rod Seal is an innovative, proprietary sealing solution engineered for demanding hydraulic and pneumatic cylinder applications. Featuring a unique Self-Compensating Sealing Architecture (SSA), it delivers exceptional leak-tight performance, reduced friction, and extended service life in high-pressure, high-speed, and adverse operating conditions.
Key Design & Innovations
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Self-Compensating Dual-Lip System (SCDLS)
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Primary Sealing Lip: Provides consistent low-pressure sealing and contamination exclusion.
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Dynamic Compensation Lip: A patented design featuring a pressure-actuated geometry. As system pressure increases, this lip intelligently increases its contact force on the rod, ensuring a perfect seal without a corresponding increase in friction or wear.
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Inter-Lip Reservoir: Temporarily retains lubricating film and traps fine contaminants, preventing rod scoring.
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Advanced Anti-Extrusion & Stability
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Integrated High-Strength Composite Anti-Extrusion Ring (POM/PEEK optional) provides superior resistance to extrusion in gaps up to 0.6mm.
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Optimized seal body geometry ensures exceptional stability in the housing groove, preventing roll or twist during dynamic cycles.
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Friction & Thermal Management
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Micro-Surface Texture (MST) on the sealing lip contact zone promotes optimal lubricant film retention, significantly reducing breakout and running friction.
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Heat-Dissipating Body Design minimizes heat buildup in the sealing zone, prolonging material integrity.
Material Options
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Standard (HPU): High-performance polyurethane for superior abrasion resistance and durability.
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High-Temp/Chemical (FKM): Fluorocarbon elastomer for extended temperature range and chemical/fluid compatibility.
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General Purpose (NBR/HNBR): Nitrile or hydrogenated nitrile for cost-effective, all-around performance.
Technical Specifications
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Pressure Range: 0 – 40 MPa (static), 0 – 25 MPa (dynamic)
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Speed: ≤ 2.0 m/s
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Temperature Range: -50°C to +200°C (dependent on material)
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Fluid Compatibility: All standard mineral-based hydraulic oils, HFA/HFB fluids, water-glycol, phosphate esters, and compressed air.
Typical Applications
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Mobile Hydraulics (Excavators, Loaders, Cranes)
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Industrial Heavy-Duty Press Cylinders
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Injection Molding Machines
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Marine and Offshore Actuators
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High-Cycle Automation Equipment
Installation & Design Guidance
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Use a dedicated, tapered installation tool to protect the sealing lips.
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Recommended rod hardness: ≥ 45 HRC.
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Recommended rod surface finish: Ra ≤ 0.2 μm, Rz ≤ 1.5 μm, with a cross-hatched lead.
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Ensure the gland is designed according to SSA-specific dimensional standards for optimal performance.
Note: The Self-Compensating Sealing Architecture (SSA) represents a proprietary, patented design focused on adaptive pressure response. This original seal type is engineered to outperform conventional rod seals in efficiency and longevity.
Original source: Hydraulic seal https://www.bszzseal.com/
