O-Ring 310x6 NBR

Applications

The O-Ring 310x6 NBR 70 ShA is a robust rubber sealing ring designed for static and semi-static sealing tasks in industrial, hydraulic, pneumatic, and mechanical assemblies. It is ideally suited for sealing flanges, lids, housings, cylinders, tanks, and covers — anywhere a secure industrial sealing is required. Its standard cross-section and precise dimensions make it a reliable component in systems utilized in manufacturing plants, fluid handling systems, hydraulic units, pneumatic devices, and general machinery maintenance.

This rubber gasket excels in stationary sealing points, where consistent sealing pressure is needed. It is widely used in hydraulic jacks, pumps, valves, tanks, gearboxes, pipelines, and fluid reservoirs, offering a dependable solution for sealing joints, ports, and housings against leaks of oil, water, hydraulic fluid, or other media.

Key Advantages

• High chemical and oil resistance - NBR (nitrile rubber) offers excellent resistance to oils, lubricants, fuels, hydraulic fluid, and many industrial chemicals, making this O-Ring suitable for demanding environments.

• Reliable static seal performance - with 310 mm inner diameter and 6 mm cross-section, this seal ensures tight sealing even under moderate compression, eliminating leaks in static joints and flanged connections.

• Durable and wear-resistant - 70 ShA hardness balances flexibility with structural strength, ensuring long service life, resistance to compression set, aging, and mechanical stress.

• Versatile industrial usage - suitable for hydraulics, pneumatics, machinery housings, fluid reservoirs, pumps, and general industrial equipment — a universal rubber gasket for many sectors.

• Easy installation and maintenance - simple circular profile allows quick placement, inspection and replacement during maintenance cycles, minimizing downtime in industrial operations.

Technical Data

• Inner diameter (ID): 310 mm

• Cross-section (thickness): 6 mm

• Material: NBR (nitrile rubber)

• Hardness: 70 ShA

• Seal type: Static / semi-static rubber seal (O-Ring / rubber gasket)

• Applications: Hydraulic and pneumatic systems, housings, tanks, flanged connections, industrial machinery, fluid and oil sealing

Description

The O-Ring 310x6 NBR 70 ShA is a premium-grade rubber seal engineered for demanding industrial sealing applications. Manufactured from high-quality nitrile rubber, this sealing ring offers reliable chemical resistance, oil and grease resistance, and stable performance in hydraulic and pneumatic systems, pumps, valves, reservoirs, and machine housings.

With an inner diameter of 310 mm and a cross-section of 6 mm, this O-Ring provides a precise, consistent fit in housings, covers, and flanges, delivering dependable static sealing under compression. Its 70 ShA hardness level provides an optimal balance between elasticity and structural integrity — ensuring resistance against compression set, mechanical aging, and long-term deformation.

This O-Ring is ideal for a broad range of industrial applications: hydraulic equipment, fluid handling systems, tanks, pipelines, fluid reservoirs, machinery housing, and any system where fluid-tight sealing of static joints is critical. Its compatibility with oils, lubricants, fuels, and hydraulic media makes it a go-to choice for maintenance departments, procurement teams, and engineers seeking a cost-effective, durable sealing solution.

FAQ

What media can O-Ring 310x6 NBR 70 ShA seal against?
It is suitable for sealing oils, lubricants, hydraulic fluids, fuels, water, and many industrial fluids — thanks to the chemical and oil resistance of nitrile rubber.

Is this seal suitable for dynamic (rotating) shafts or moving pistons?
No — this O-Ring is optimized for static or semi-static sealing (e.g. housings, tanks, flanges). For dynamic sealing of shafts or pistons, a specialized rotary or dynamic seal would be required.

How do I choose correct O-Ring size for my housing or flange?
Ensure the inner diameter matches the internal diameter of the housing or flange opening. The cross-section (6 mm) must suit the groove width or compression gap. Also, confirm material compatibility with the sealing medium.

Will the O-Ring maintain sealing over time?
Yes — with 70 ShA hardness and NBR material, the seal offers good resistance to aging, compression set, and wear, ensuring long-term static sealing performance under standard conditions.