O-ring 83x5,5 NBR

Applications & Industry Use

The O-Ring 83x5.5 NBR 70 ShA is a robust industrial sealing ring designed for a wide range of hydraulic, pneumatic and mechanical applications. With an inner diameter of 83 mm and a 5.5 mm cross-section, it provides reliable sealing in pumps, valves, actuators, bearing housings, gear mechanisms, fluid connectors and equipment operating under pressure or vibration. It is suitable for both static sealing (covers, flanges, housings) and low-dynamic applications in industrial machinery.

Material Characteristics & Technical Advantages

Manufactured from NBR (nitrile butadiene rubber) with a hardness of 70 Shore A, this O-Ring delivers an optimal balance between elasticity, chemical resistance and mechanical strength. NBR is widely used for industrial sealing due to its excellent resistance to oils, hydraulic fluids, fuels, greases and many common industrial chemicals.

The 5.5 mm cross-section ensures strong contact pressure, effective sealing, and good resistance to compression set. The material maintains flexibility across typical operating temperatures, ensuring dependable sealing performance even during pressure cycles, vibrations or continuous machine operation.

Key Benefits for B2B Applications

• High resistance to oils, fuels and hydraulic fluids - ideal for demanding industrial environments.

• 5.5 mm cross-section - provides secure sealing, even in high-pressure or high-vibration systems.

• Precise dimensional stability - suitable for OEM production, maintenance and retrofit installations.

• Wide compatibility - fits pumps, valves, cylinders, flanges, housings, transmission systems and industrial automation equipment.

• Durable and reliable sealing component - extends service interval and reduces downtime in machinery and production lines.

FAQ

Is O-Ring 83x5.5 NBR 70 ShA suitable for hydraulic oil systems?
Yes. NBR material is resistant to hydraulic oils, lubricants and fuels, making it ideal for hydraulic pumps, valves and actuators.

Can this O-Ring be used in pneumatic devices?
Yes. Its elasticity and chemical resistance make it effective in pneumatic valves, cylinders and air-handling components.

Does the 5.5 mm cross-section offer good sealing?
Yes. The increased cross-section provides excellent sealing pressure and resistance to extrusion in standard industrial applications.

What temperature range does NBR 70 ShA support?
Standard NBR O-Rings provide reliable performance across typical industrial temperature ranges.

Which industries most commonly use this O-Ring size?
Hydraulics, pneumatics, machine production, servicing, maintenance operations, lubrication systems and general industrial equipment.