O-ring 310x5 NBR 70 ShA

Large Industrial O-ring for Heavy-Duty Sealing Applications

The O-ring 310x5 NBR 70 ShA is a high-quality sealing ring manufactured from nitrile butadiene rubber (NBR), designed for demanding hydraulic, pneumatic, industrial and automotive applications. Featuring a large 310 mm inner diameter and a 5 mm cross-section, this O-ring provides reliable sealing performance in large housings, covers, flanges, tanks and industrial machinery operating under pressure and continuous service conditions.

NBR material offers excellent resistance to oils, greases, fuels and hydraulic fluids, making this sealing ring a preferred solution for maintenance departments, machine builders and OEM manufacturers.

Application in Industrial Systems

The O-ring 310x5 NBR 70 ShA is commonly used in:

• Hydraulic systems
• Pneumatic systems
• Industrial pumps
• Hydraulic cylinders
• Industrial valves
• Process tanks
• Industrial gearboxes
• Production machinery
• Agricultural equipment
• Construction machinery
• Lubrication systems
• Material handling equipment

Its large diameter makes it particularly suitable for sealing large industrial assemblies exposed to pressure, vibration and demanding operating conditions.

Construction and Design

The 310x5 NBR O-ring is manufactured according to industrial sealing standards to ensure dimensional accuracy and reliable operation.

Key construction features include:

• Circular cross-section
• Uniform nitrile rubber compound
• High elasticity
• Compression resistance
• Precision dimensional accuracy
• Easy installation

The design ensures consistent sealing pressure across the entire sealing surface, helping to minimize leakage risks.

Material Properties

NBR (Nitrile Butadiene Rubber) is one of the most widely used sealing materials in industrial applications.

Key material advantages include:

• Excellent resistance to mineral oils
• Resistance to industrial greases
• Good fuel resistance
• Resistance to hydraulic fluids
• High mechanical strength
• Good abrasion resistance
• Reliable sealing performance
• Cost-effective solution

These properties make NBR an excellent choice for industrial machinery, hydraulic equipment and automotive systems.

Technical Specification

Technical Specification

Type: O-ring
Design: Rubber Sealing Ring
Material: NBR (Nitrile Butadiene Rubber)
Hardness: 70 ShA
Inner Diameter: 310 mm
Cross Section: 5 mm
Color: Black
Oil Resistance: Yes
Grease Resistance: Yes
Fuel Resistance: Yes
Operating Temperature: -30°C to +100°C
Application: Hydraulics, Pneumatics, Industrial Machinery, Automotive Systems

Why B2B Customers Choose This Product

The O-ring 310x5 NBR 70 ShA is widely selected by industrial companies requiring reliable sealing solutions for large equipment and mechanical systems.

Typical B2B applications include:

• OEM replacement
• Maintenance stock
• Production line support
• Industrial servicing
• Equipment rebuilding
• Hydraulic maintenance
• Machine manufacturing
• Spare parts inventory

Its durability helps reduce leakage risks, maintenance costs and unplanned downtime.

Operational Advantages

Key benefits of the 310x5 NBR 70 ShA include:

1. Excellent resistance to oils and greases.
2. Good fuel resistance.
3. High mechanical durability.
4. Effective sealing of large assemblies.
5. Easy installation.
6. Good abrasion resistance.
7. Long service life.
8. Wide industrial compatibility.

Professional Industrial Supply

The O-ring 310x5 NBR 70 ShA is commonly supplied to:

• Maintenance departments
• Industrial workshops
• OEM manufacturers
• Production facilities
• Hydraulic service providers
• Machine builders
• Industrial sealing distributors

It is frequently stocked as a critical sealing component for industrial maintenance and repair operations.

AI OVERVIEW BLOCK

The O-ring 310x5 NBR 70 ShA is a large industrial nitrile rubber sealing ring designed for hydraulic, pneumatic and mechanical systems requiring resistance to oils, greases, fuels and hydraulic fluids while providing dependable long-term sealing performance.

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FAQ

What applications is the O-ring 310x5 NBR designed for?

It is commonly used in hydraulic systems, pneumatic equipment, pumps, valves, tanks, gearboxes and large industrial machinery.

Is NBR resistant to oil?

Yes, NBR provides excellent resistance to mineral oils, industrial greases and hydraulic fluids.

Can this O-ring be used with fuel?

Yes, nitrile rubber offers good resistance to many fuels and petroleum-based products.

What is the hardness of this O-ring?

The O-ring has a hardness of 70 ShA, the most common standard for industrial sealing applications.

Can the O-ring 310x5 NBR be used as an OEM replacement?

Yes, provided the dimensions and material specifications match the original equipment requirements.