Nitrile Nylon Hydraulic Piston Seal Assembly

Nitrile Nylon Hydraulic Piston Seal Assembly

Engineered for demanding hydraulic cylinder applications, this piston seal assembly combines a nitrile (NBR) sealing element with a reinforced nylon (PA) wear ring to deliver reliable bi-directional sealing and precise bore guidance in a single, drop-in unit.

Key Benefits

• Leak-free performance — the NBR lip seal maintains consistent contact pressure across the full stroke, preventing fluid bypass even under dynamic load cycling
• Reduced metal-to-metal contact — the nylon wear ring centers the piston rod and absorbs lateral forces, extending cylinder and seal service life
• Wide fluid compatibility — nitrile compound resists petroleum-based hydraulic oils, water-glycol fluids, and emulsions
• Temperature range — rated for continuous operation from -40 °F to +212 °F (-40 °C to +100 °C)
• Easy installation — pre-assembled profile fits standard piston grooves; no bonding or secondary components required

Typical Applications

Industrial hydraulic cylinders, agricultural equipment, mobile hydraulics, construction machinery, and pneumatic/hydraulic press systems where reliable piston sealing and bore wear protection are critical.

Material Specifications

• Sealing element: Nitrile Butadiene Rubber (NBR), 70–90 Shore A
• Wear ring / guide ring: Reinforced Nylon (PA66 or PA46)
• Fluid compatibility: Petroleum oils, water-glycol, HFA/HFB/HFC emulsions