Engineered for high-performance hydraulic sealing, this Buna-N (NBR) O-ring delivers reliable leak-free performance in demanding fluid power applications. With a Shore A hardness of 70, it strikes the ideal balance between flexibility and compression resistance — providing a consistent, long-lasting seal under dynamic and static hydraulic conditions.
Key Features
Material: Buna-N / Nitrile (NBR)
Durometer: 70 Shore A
Temperature Range: -40°F to +250°F (-40°C to +121°C)
Fluid Compatibility: Petroleum-based hydraulic oils, water-based fluids, diesel fuel, mineral oils, and greases
Conforms to AS568 standard dash sizes
Excellent resistance to abrasion, extrusion, and compression set
Low swell in petroleum fluids for dimensional stability under pressure
Typical Applications
Hydraulic cylinders and piston seals
Pump and valve housings
High-pressure fluid connections
Industrial and mobile hydraulic systems
Each O-ring is manufactured to tight dimensional tolerances, ensuring consistent cross-section and reliable gland fit. Suitable for OEM builds and aftermarket maintenance across a wide range of hydraulic equipment.
