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OER Series Bidirectional Pressure Rotary Rod Seals | Industrial-Grade Hydraulic & Rotary Joint Solutions
Engineered for dynamic pressure environments, the OER Series Piston Rod Seal masters bidirectional fluid transfer in rotating spindles, machine tool hydraulics, and precision rotary joints. Its innovative dual-component design combines a wear-resistant modified PTEF+bronze ring with an elastic NBR O-ring, delivering leak-free performance under alternating pressure conditions where conventional rod seals fail.
Working Pressure: ≤30 MPa (4,351 psi)
Temperature Range: -30°C to +100°C
Reciprocating Speed: ≤1 m/s (39.4 in/s)
Media Compatibility:
Petroleum-based hydraulic oils
Water-glycol hydraulic fluids
Oil-water emulsions
Material Composition:
Primary Seal: Bronze-reinforced PTEF (low-friction, anti-galling)
O-Ring: 70 Shore high-performance NBR
1. Pressure Alternation Mastery
Uniquely engineered for systems where pressure shifts across the seal face (e.g., rotary union test rigs, CNC turret hydraulics). The PTEF+bronze ring withstands 30 MPa directional switches without extrusion.
2. Triple-Fluid Resilience
Tested with ASTM D943-certified fluids:
Water-glycol: Zero hydrolysis after 1,000h at 80°C
Oil emulsions: 30% less swelling vs. standard PTFE seals
3. Critical Applications
Rotating track spindles in port cranes
High-cycle rotary joints for steel mill cooling systems
Injection molding machine hydraulic rotators
Installation Protocol
Edge Preparation: Chamfer all grooves to ≤0.3mm (avoid lip damage during fitting)
Surface Pairing: Hard-chromed shafts (HRC 60+) recommended for PTEF compatibility
Pressure Equalization: Install with pressure ports facing primary load direction
Ordering Examples (ISO 3601-1 compliant):
Standard: OER-100
Custom: OER-100 111 4.2
Interchange: CR2037F0 (Parker legacy P/N)
30,000+ Pressure Cycles in 80°C emulsion environments (proven at Siemens gearbox test labs)
Zero Maintenance in rotary joints with ≤0.5m/s oscillation
Corrosion Defense: Bronze filler reserves pitting in glycol fluids
Industry Certifications: RoHS 3, REACH SVHC-free
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Main Product:
Hydraulic Seals,
Rod seals,
Piston Seals ,
Wiper Seals,
Hydraulic Seals Manufacturer,
Seals Supplier
