O-Ring NBR 8x3.5 mm 70 Shore A

What Is the O-Ring NBR 8x3.5 mm 70 Shore A 1000 pcs?

The O-Ring NBR 8x3.5 mm 70 Shore A (1000 pcs) is an industrial sealing component developed for OEM manufacturers, production facilities, maintenance departments (MRO), machine builders and industrial distributors. Manufactured from NBR (Nitrile Butadiene Rubber, Buna-N) with a hardness of 70 Shore A, it provides dependable sealing in hydraulic, pneumatic and mechanical systems operating with mineral oils, lubricating greases and other petroleum-based media. The 1000-piece bulk package is specifically intended for industrial production, warehouse stock and continuous manufacturing, clearly distinguishing it from smaller service-oriented packaging.

Designed for Serial Manufacturing

The 1000-piece bulk pack is intended for companies that consume sealing components on a daily basis.

Typical users include:

• OEM manufacturers
• Industrial production plants
• Machine builders
• Hydraulic equipment manufacturers
• Pneumatic equipment manufacturers
• Industrial maintenance departments (MRO)
• Technical distributors
• Industrial wholesalers
• Production line operators

Bulk packaging supports uninterrupted production while reducing purchasing frequency and inventory costs.

Technical Specification

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

Hardness: 70 Shore A

Inside Diameter: 8 mm

Cross Section: 3.5 mm

Profile: O-Ring

Colour: Black

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

Chemical Resistance:

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

Packaging: 1000 pieces (Bulk Pack)

Why Choose NBR 70 Shore A?

NBR is one of the most widely used elastomers for industrial sealing applications.

Its advantages include:

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

The 70 Shore A hardness provides an ideal balance between flexibility and durability for hydraulic and pneumatic sealing.

Applications in Hydraulic and Pneumatic Systems

The O-Ring 8x3.5 mm NBR 70 Shore A is commonly used in:

• Hydraulic systems
• Pneumatic systems
• Hydraulic cylinders
• Pumps
• Industrial valves
• Manifolds
• Industrial automation
• Manufacturing equipment
• Agricultural machinery
• Construction equipment
• OEM assemblies
• Production lines

Its dimensional accuracy makes it suitable for demanding industrial sealing applications.

Benefits of Bulk Packaging

The 1000-piece package offers significant operational advantages:

• Lower cost per O-ring
• Reduced purchasing frequency
• Continuous warehouse stock
• Simplified inventory management
• Better production planning
• Reduced machine downtime
• Efficient logistics
• Ideal for serial production and OEM assembly

Bulk packaging helps manufacturers maintain production continuity while lowering procurement costs.

Warehouse Stock and Logistics

Maintaining an inventory of frequently used sealing components improves operational efficiency.

The 1000-piece package is ideal for:

• Production warehouses
• OEM manufacturing
• Maintenance departments
• Spare parts inventory
• Industrial distributors
• Technical service centers

Warehouse stock helps prevent production delays caused by unavailable sealing components.

Why Engineers Choose NBR O-Rings

Engineers choose NBR sealing rings because they provide:

• Excellent resistance to oils and greases
• High abrasion resistance
• Standard 70 Shore A hardness
• Consistent dimensions
• Easy installation
• Reliable hydraulic sealing
• Compatibility with pneumatic systems
• Long-term industrial performance

Frequently Asked Questions (FAQ)

Why choose the 1000-piece package?

It is intended for manufacturers and industrial companies that require continuous availability of sealing components for production and assembly.

Is this O-ring suitable for hydraulic systems?

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

Can it be used in pneumatic applications?

Yes. It is commonly installed in pneumatic cylinders, valves and compressed air systems.

Is a smaller package available?

Yes. A 100-piece package is available for workshops, maintenance technicians and repair operations.

How should NBR O-rings be stored?

Store them in a cool, dry environment away from UV light, ozone and direct heat.

Frequently Asked Questions from Engineers

Is the 1000-piece package suitable for serial production?

Yes. It has been specifically prepared for OEM manufacturing and continuous industrial assembly.

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

Yes. Their consistent dimensions make them suitable for automated assembly equipment.

Is 70 Shore A the standard hardness for industrial sealing?

Yes. It is the most commonly specified hardness for hydraulic, pneumatic and general industrial applications.

Should this size be kept in warehouse inventory?

Yes. Maintaining stock helps reduce production downtime and supports efficient maintenance planning.

Is the 1000-piece package intended for workshop repairs?

No. The 1000-piece bulk pack is intended for industrial production, OEM manufacturing and high-volume users. Workshops and maintenance teams requiring smaller quantities should choose the 100-piece package.