The NMY piston rod seal is a high-performance U-cup sealing solution specifically engineered for demanding piston rod applications in both pneumatic and light hydraulic systems. Featuring a robust, non-symmetrical lip profile, the NMY series delivers superior sealing reliability under higher pressures and more aggressive operating conditions compared to standard pneumatic seals.
The standout feature of the NMY seal is its specially designed energizing element — a combination of sealing lip geometry and an integrated O-ring or NBR energizer that ensures positive lip contact even at low system pressures. This design provides exceptional low-pressure sealing performance, eliminating the leakage risks often associated with conventional lip seals during start-up or pressure fluctuation events. As system pressure increases, the sealing force intensifies proportionally, creating a dynamic sealing effect that adapts to changing operating conditions.
Key Technical Specifications:
Maximum Pressure: Up to 40 bar (depending on material)
Speed Range: 0.5 – 1.0 m/s
Temperature Range: -30°C to +110°C (standard material)
Available Materials: NBR, FKM, HNBR, and TPU for specialized applications
Media Compatibility: Mineral oils, synthetic hydraulic fluids, compressed air, and water-glycol mixtures
The NMY seal’s asymmetrical lip design ensures an optimal lubrication film between the sealing lip and the moving rod surface. This reduces friction, minimizes heat generation, and significantly extends seal service life — making it particularly suitable for high-cycle applications such as injection molding machines, hydraulic presses, and construction equipment.
Applications include: Hydraulic cylinders, pneumatic actuators, agricultural machinery, material handling equipment, and industrial automation systems requiring dependable rod sealing under variable load conditions.
With its rugged construction, versatile material options, and proven performance track record, the NMY piston rod seal represents a reliable sealing choice for engineers demanding durability and consistent operation in tough industrial environments.
Original text from: Hydraulic and Pneumatic Seals https://www.bszzseal.com/
