UPH‑Type piston & rod combined seal is a dual‑purpose hydraulic reciprocating seal that can be installed on both piston and piston rod of hydraulic cylinders. It adopts an optimized U‑lip profile. When hydraulic pressure is applied, the lip expands and presses closely against the mating surface to prevent hydraulic fluid leakage, delivering dependable sealing performance during back‑and‑forth movement.
Made of high-strength polyurethane, the UPH seal features excellent wear resistance, low friction and good anti‑extrusion capability. It can tolerate continuous reciprocating cycles under medium pressure conditions. Its standardized cross-section fits common seal grooves without extra machining, enabling quick installation and replacement.
The dual-use design of the UPH seal simplifies spare part management. Customers can stock one seal model for piston and rod sealing positions, cutting inventory and procurement costs. It maintains stable performance in general industrial hydraulic systems, injection molding machines and light engineering machinery.
When matched with wiper seals and guide rings, the UPH‑type combined seal forms a complete hydraulic sealing kit. It helps reduce oil leakage and extend the service life of hydraulic cylinders. It is a reliable and economical reciprocating sealing solution for many hydraulic equipment applications.
Original text from: Hydraulic and Pneumatic Seals https://www.bszzseal.com/
