O-Ring NBR 8x3 mm 70 Shore A

What Is the O-Ring NBR 8x3 mm 70 Shore A 1000 pcs?

The O-Ring NBR 8x3 mm 70 Shore A (1000 pcs) is an industrial technical sealing ring supplied in a bulk package of 1000 pieces for OEM manufacturers, industrial production, maintenance departments (MRO), machine builders and technical distributors. Manufactured from NBR (Nitrile Butadiene Rubber, Buna-N) with a hardness of 70 Shore A, it provides reliable sealing in hydraulic, pneumatic and mechanical systems operating with mineral oils, lubricating greases and petroleum-based fluids. This bulk package is intended for companies requiring continuous stock availability, efficient warehouse management and uninterrupted production rather than occasional maintenance work.

Serial Production and OEM Applications

The 1000-piece bulk pack has been developed for industrial users with continuous O-ring consumption.

Typical applications include:

• OEM manufacturing
• Industrial production lines
• Hydraulic equipment assembly
• Pneumatic equipment manufacturing
• Machine building
• Industrial maintenance (MRO)
• Technical distribution
• Spare parts warehouses
• Industrial service companies

Bulk packaging minimizes supply interruptions and supports efficient production planning.

Technical Specification

Material: NBR (Nitrile Butadiene Rubber, Buna-N)

Hardness: 70 Shore A

Inside Diameter: 8 mm

Cross Section: 3 mm

Colour: Black

Operating Temperature: Approximately -30°C to +100°C

Chemical Resistance:

• Mineral oils
• Lubricating greases
• Hydraulic oils
• Petroleum-based fluids
• Many industrial lubricants

Packaging: 1000 pieces (Bulk Packaging)

Why Choose NBR 70 Shore A?

NBR is the industry standard material for general-purpose industrial sealing.

Its properties include:

• Excellent resistance to mineral oils
• Good compatibility with lubricating greases
• High abrasion resistance
• Good mechanical strength
• Reliable sealing under static and dynamic conditions
• Low compression set
• Long service life in industrial applications

The 70 Shore A hardness is widely used in hydraulic and pneumatic sealing because it offers an effective balance between flexibility and wear resistance.

Applications in Hydraulic and Pneumatic Systems

The O-Ring 8x3 mm NBR 70 Shore A is commonly installed in:

• Hydraulic cylinders
• Hydraulic valves
• Pneumatic actuators
• Pumps
• Industrial manifolds
• Process equipment
• Automation systems
• Agricultural machinery
• Construction equipment
• Manufacturing machinery
• Industrial maintenance operations

Its dimensional accuracy makes it suitable for both static and dynamic sealing applications.

Benefits of Bulk Packaging

The 1000-piece bulk package offers important advantages for industrial users:

• Lower cost per sealing ring
• Continuous warehouse stock
• Fewer purchasing cycles
• Simplified inventory management
• Improved production planning
• Reduced downtime
• Efficient logistics
• Ideal for OEM assembly and serial manufacturing

For companies consuming sealing components daily, bulk packaging reduces procurement costs while improving production continuity.

Warehouse Stock and Production Continuity

Maintaining a permanent inventory of standard O-rings is essential for production efficiency.

The 1000-piece package is recommended for:

• Manufacturing plants
• OEM production
• Industrial maintenance departments
• Spare parts warehouses
• Technical distributors
• Production line support

Warehouse stock helps eliminate delays caused by unavailable sealing components and supports uninterrupted manufacturing processes.

Why Engineers Choose NBR O-Rings

Industrial engineers value NBR sealing rings because they provide:

• Excellent oil resistance
• Reliable hydraulic sealing
• Compatibility with pneumatic equipment
• High abrasion resistance
• Consistent dimensions
• Easy installation
• Long operating life
• Stable performance in industrial environments

Frequently Asked Questions (FAQ)

Why is the 1000-piece package recommended for industrial companies?

It provides continuous stock availability, lower purchasing costs and supports uninterrupted production.

Is this O-ring suitable for hydraulic equipment?

Yes. NBR is widely used in hydraulic systems operating with mineral oil-based fluids.

Can this O-ring be installed in pneumatic systems?

Yes. It is suitable for pneumatic cylinders, valves and compressed air equipment.

Is this package intended for OEM production?

Yes. The 1000-piece bulk pack is specifically designed for OEM assembly, industrial production and high-volume consumption.

How should NBR O-rings be stored?

Store them in a cool, dry place away from UV light, ozone and direct heat sources to preserve their sealing properties.

Frequently Asked Questions from Engineers

Is 70 Shore A the standard hardness for industrial sealing?

Yes. It is the most common hardness for hydraulic, pneumatic and general industrial sealing applications.

Can these O-rings be used in automated production lines?

Yes. Their consistent dimensions make them suitable for automated assembly and serial manufacturing.

Is NBR resistant to industrial lubricants?

Yes. NBR offers excellent compatibility with mineral oils, greases and many petroleum-based industrial fluids.

Should this size be kept in warehouse inventory?

Yes. Frequently used sealing sizes should always be available to minimize maintenance delays and production downtime.

Is the 1000-piece package intended for workshop repairs?

No. This bulk package is dedicated to industrial production, OEM manufacturing and high-volume users. Service workshops and maintenance teams requiring smaller quantities should select the 100-piece package.