O-ring 84x5,7 NBR

Reliable sealing for hydraulic and pneumatic systems

The Oring 84x5.7 NBR 70 ShA is a high-quality rubber sealing ring designed for demanding industrial applications. Manufactured from NBR (nitrile rubber) with a hardness of 70 Shore A, it offers an ideal balance of elasticity, durability and resistance to oils, greases and standard working fluids. Its inner diameter of approx. 84 mm and 5.7 mm cross-section make it a widely used sealing element in pumps, valves, actuators, engines, bearing housings and various hydraulic or pneumatic systems.

NBR is known for its excellent mechanical strength, low compression set and stable sealing performance under pressure fluctuations and vibrations. The material maintains its properties in typical operating temperatures from -30°C to +100°C, which covers most industrial working environments. This makes the Oring 84x5.7 a dependable sealing component for both OEM manufacturing and maintenance operations.

Key advantages

• High resistance to oils, greases, hydraulic fluids and fuels, ensuring dependable sealing performance

• Good elasticity and mechanical strength, reducing the risk of leaks under dynamic or static conditions

• Universal industrial application, ideal for pumps, valves, actuators, compressors, bearing housings and machinery

• Suitable for hydraulic and pneumatic systems, offering a stable and long-lasting seal

• Easy installation, thanks to standardised sizing and predictable behaviour during assembly

FAQ

Is the 84x5.7 NBR 70 ShA Oring compatible with hydraulic oils?
Yes. NBR is engineered specifically for applications involving oils, greases and many industrial fluids.

What is the temperature range of this Oring?
Typical working conditions range from -30°C to +100°C, suitable for most industrial environments.

Can it be used in dynamic applications?
Yes. With proper lubrication and within its temperature limits, an NBR 70 ShA Oring performs well in both static and dynamic sealing.

Where is the Oring most commonly used?
In pumps, valves, actuators, engines, bearing housings, hydraulic circuits and pneumatic devices.

Why choose NBR instead of other elastomers?
Because NBR offers excellent resistance to oils and fuels at an economical cost, making it ideal for standard industrial applications.