NYH‑Type piston rod seal is a single‑acting hydraulic rod seal designed for reciprocating piston rods in hydraulic cylinders. It adopts a specially optimized asymmetric Y‑lip structure. When hydraulic pressure acts on the seal, the sealing lip tightly presses against the piston rod surface to form a reliable sealing barrier and effectively prevent hydraulic oil leakage.
Made of high‑performance polyurethane material, the NYH rod seal features excellent wear resistance, low friction and strong anti‑extrusion performance. It can maintain stable sealing performance under medium to high pressure and frequent reciprocating cycles. Its compact cross‑section fits standard sealing grooves, allowing easy installation without modifying cylinder components.
The NYH‑type seal balances sealing tightness and friction loss. It reduces heat build‑up during continuous operation and extends the service life of the piston rod and matching hydraulic parts. This rod seal is widely used in construction machinery, metallurgical equipment, injection molding machines and general industrial hydraulic systems.
Matched with wiper seals and guide rings, the NYH piston rod seal builds a complete hydraulic sealing system. It is a reliable sealing component that helps lower equipment failure rates and reduce maintenance costs for hydraulic cylinder applications.
Original text from: Hydraulic and Pneumatic Seals https://www.bszzseal.com/
