PSE High Pressure Polyurethane Rod Seals

PSE Series High-Pressure Polyurethane Rod Seals | Universal Hydraulic Cylinder Solutions

Engineered for demanding industrial hydraulics, the PSE Series Piston Rod Seal delivers uncompromising performance in high-pressure systems up to 32 MPa. Crafted from 93 Shore imported polyurethane, this hydraulic cylinder rod seal excels in petroleum-based and emulsion environments while offering 3x longer service life than standard NBR seals.

Critical Technical Specifications

• Working Pressure: ≤32 MPa (4,641 psi)

  • Critical Note: Install retaining rings above 20 MPa

• Temperature Range: -30°C to +80°C

• Material Hardness: 93 Shore A (polyurethane)

• Media Compatibility:

  • ✅ Petroleum-based hydraulic oils

  • ✅ Oil-water emulsions

  • ❌ Not compatible with bio-oils/environmentally safe fluids

Performance Advantages

1. Extrusion Resistance

• Reinforced lip geometry withstands 32 MPa surges

• Integrated anti-extrusion ridge reduces backup ring dependency below 20 MPa

2. Extreme Environment Resilience

• Maintains elasticity at -30°C (arctic mining equipment validated)

• Resists hydrolysis in water-glycol emulsions (800-hour ASTM D471 testing)

3. Application-Specific Design

• Excavator boom cylinders (20-32 MPa range)

• Forging press piston rods with frequent pressure spikes

• Marine deck machinery exposed to saltwater emulsions

Installation & Compatibility Guidelines

Pressure-Specific Protocols

Material Precautions

• Avoid bio-oils - polyurethane degradation risk

• Use phosphate-ester-compatible greases during assembly

Surface Pairing

• Hard-chrome plated rods (HRC 60+)

• Surface finish ≤0.4μm Ra (ISO 4288)

Industry-Leading Value

• 50,000+ Cycle Durability in 80°C emulsion testing

• Zero Lip Deformation at 30 MPa with proper retaining rings

• Cost Savings: Eliminates secondary wiper seals in dusty environments

Compliance: REACH SVHC-free, RoHS 3 certified

Technical Support Tip: Request our pressure calculator for retaining ring sizing guidance