O-Ring 4x2 NBR

Applications

The O-Ring size 4x2 mm made of nitrile rubber (NBR) at 70 ShA hardness is an industrial-grade sealing component crafted for both static seal and moderate dynamic sealing tasks. Frequently deployed in hydraulic cylinders, pneumatic valves, automotive fuel systems, bearing housings and general machine assemblies. This pack of 100 units supports maintenance teams, OEMs and procurement departments that demand consistent supply of reliable rubber gaskets for wear-prone interfaces. The material’s chemical resistance and standard size make it ideal for industrial sealing ring applications, especially in environments exposed to oils, greases and fuels.

Advantages

• High durability rubber gasket material: NBR 70 ShA offers a robust balance between flexibility and hardness, delivering exceptional resistance to mineral oils, greases, fuels and typical industrial media.

• Precise dimension 4x2 mm: Ensures seamless fit in standard grooves or hardware designed for metric O-ring profiles, reducing downtime and simplifying inventory management.

• Bulk pack of 100 pieces: Facilitates cost-effective stocking for B2B operations, supplying multiple service points, reducing order frequency and enabling efficient maintenance logistics.

• Versatile industrial sealing application: Suitable for hydraulic and pneumatic systems, automotive subassemblies, machine tools and general equipment where reliable sealing rings are required.

• Improved reliability in sealing interfaces: Using high-quality industrial sealing rings reduces the risk of leaks, extends service intervals and enhances system uptime.

Technical Data

• Product type: O-Ring / rubber seal / sealing ring

• Dimensions: Inner diameter (ID) = 4 mm · Cross-section (CS) = 2 mm

• Material: Nitrile rubber (NBR)

• Hardness: 70 ShA

• Quantity: Pack of 100 pieces

• Temperature range (typical): approx. -30 °C to +100 °C (material dependent)

• Media resistance: mineral oils, lubricants, hydraulic fluids, fuels, water

• Applications: Hydraulic systems, pneumatic systems, automotive fuel cycles, machine tool assemblies, static seals and light dynamic motion

• Keywords: O-Ring, rubber gasket, industrial sealing ring, oil-resistant O-ring, technical sealing component

Main Description

This O-Ring 4x2 mm NBR 70 ShA (Pack of 100) is a premium sealing solution tailored to meet the demands of industrial buyers, engineers and maintenance professionals. Engineered from nitrile rubber with a hardness of 70 ShA, it provides the necessary combination of flexibility, chemical resilience and dimensional stability. Whether used as a rubber gasket in a bearing housing, a sealing ring in a pneumatic valve or as oil-resistant O-ring in automotive subsystems, this product delivers consistent performance under demanding conditions.

The standard size—4 mm inner diameter with 2 mm cross-section—fits typical metric grooves and hardware, enabling quick integration or replacement without redesign. The material’s inherent resistance to oils, greases and fuels safeguards against leakage, significantly reducing the risk of unscheduled downtime. Selecting this pack of 100 pieces ensures your service team has ready access to essential sealing rings, streamlining procurement and maintenance workflows.

From hydraulic cylinders to pneumatic actuators and general machine assemblies, this O-ring is positioned for high-demand applications. Its role as an industrial sealing ring enhances machine reliability, reduces maintenance interventions and supports operational continuity. For procurement managers and reliability engineers seeking a reliable rubber gasket or oil-resistant O-ring, this pack marks a strategic stock item in the B2B catalogue.

FAQ

Q1: What makes NBR a suitable material for O-rings in industrial applications?
A1: Nitrile rubber (NBR) exhibits excellent resistance to mineral oils, greases, hydraulic fluids and fuels, while maintaining elasticity and dimensional stability — making it a preferred choice for oil-resistant seals.

Q2: Can I use this O-ring in dynamic applications?
A2: Yes, it is suitable for light dynamic motion (e.g., pistons, actuators) as well as static sealing. For high-speed rotary or heavy dynamic loads, a specialized seal design may be required.

Q3: How is the size 4x2 mm defined and how to check fit?
A3: 4x2 means inner diameter (ID) of 4 mm and cross-section (CS) of 2 mm. Ensure the groove or housing accommodates this dimension and the sealing ring’s compression is appropriate for your application.

Q4: What is the benefit of a pack of 100 units?
A4: Bulk packaging supports stocking and procurement efficiency for B2B operations, reducing unit cost, simplifying reorder cycles and ensuring availability for service teams.

Q5: What temperature and media conditions suit this O-ring?
A5: While exact conditions depend on the specific compound, NBR 70 ShA typically performs from around -30 °C to +100 °C and is suitable for oils, lubricants, fuels and aqueous environments in industrial settings.