O-ring 250x7,5 NBR 70 ShA

Heavy-Duty Sealing Solution for Large Industrial Assemblies

The O-ring 250x7.5 NBR 70 ShA is a high-quality sealing ring manufactured from nitrile butadiene rubber (NBR), designed for demanding industrial, hydraulic, pneumatic and automotive applications. Featuring a large 250 mm inner diameter and a reinforced 7.5 mm cross-section, this O-ring delivers reliable sealing performance in large housings, flanges, covers, tanks and heavy-duty machinery operating under pressure and continuous load.

NBR material provides excellent resistance to oils, greases, fuels and hydraulic fluids, making this sealing ring a trusted solution for industrial maintenance, OEM manufacturing and machine rebuilding projects.

Application in Industrial Systems

The O-ring 250x7.5 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
• Industrial processing installations

Its large cross-section makes it particularly suitable for sealing connections exposed to vibration, pressure and demanding operating conditions.

Construction and Design

The 250x7.5 NBR O-ring is manufactured according to industrial sealing standards to ensure reliable operation and dimensional consistency.

Key construction features include:

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

The design provides uniform sealing pressure across the entire sealing surface, reducing the risk of leakage.

Material Properties

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

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 operation

These characteristics make NBR an ideal material for machinery, hydraulic systems and industrial equipment.

Technical Specification

Technical Specification

Type: O-ring
Design: Rubber Sealing Ring
Material: NBR (Nitrile Butadiene Rubber)
Hardness: 70 ShA
Inner Diameter: 250 mm
Cross Section: 7.5 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 250x7.5 NBR 70 ShA is widely selected by industrial companies requiring dependable sealing solutions for large equipment and machinery.

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 250x7.5 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 250x7.5 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 250x7.5 NBR 70 ShA is a heavy-duty nitrile rubber sealing ring designed for hydraulic, pneumatic and industrial machinery applications requiring resistance to oils, greases, fuels and hydraulic fluids while delivering reliable long-term sealing performance.

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FAQ

What applications is the O-ring 250x7.5 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 250x7.5 NBR be used as an OEM replacement?

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