HPU Heavy Duty Hydraulic Cylinder Piston Seal is a double-acting sealing solution featuring a polyurethane seal ring, elastomer energizer, and backup rings. Designed for heavy-duty hydraulic applications requiring excellent wear resistance, anti-extrusion performance, and reliable sealing under high pressure.

HPB Double-Acting Piston Seal adopts PU+NBR combination structure, wear-resistant bidirectional piston seal for medium-high pressure hydraulic cylinders. Fit agricultural & construction machinery, custom sizes & materials available.