Engineered for demanding hydraulic cylinder applications, this urethane rod buffer seal acts as a pressure-relief pre-seal, protecting your primary rod seal from pressure spikes, fluid contamination, and premature wear. Manufactured from high-performance polyurethane, it delivers exceptional abrasion resistance and load-bearing capacity across a wide range of operating conditions.
Key Benefits
Pressure spike protection — absorbs and dampens hydraulic pressure surges before they reach the primary seal, extending overall seal system life
Superior abrasion resistance — urethane compound withstands rod surface contact and particulate contamination better than standard rubber compounds
Wide temperature range — performs reliably from -40°F to +200°F (-40°C to +93°C) in standard hydraulic fluid environments
Excellent extrusion resistance — maintains dimensional stability under high-pressure conditions, preventing gap extrusion
Compatible with mineral-based hydraulic oils, water-glycol fluids, and most synthetic hydraulic fluids
Typical Applications
Hydraulic cylinders (mobile equipment, industrial presses, construction machinery)
Pneumatic and hydraulic actuators
Heavy-duty linear motion systems
Material
Polyurethane (AU/EU) — Shore A hardness typically 90–95, optimized for rod buffer duty.
Sold individually. Specify rod diameter and groove dimensions when ordering to ensure correct fit.
