O-Ring NBR 30x3 mm 70 Shore A

What Is the O-Ring NBR 30x3 mm 70 Shore A 1000 pcs?

The O-Ring NBR 30x3 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 reliable sealing in hydraulic, pneumatic and mechanical systems operating with mineral oils, lubricating greases and petroleum-based fluids. The 1000-piece bulk package is specifically designed for serial production, industrial inventory management and continuous manufacturing, making it clearly different from smaller service packs intended for maintenance and repair.

Designed for OEM Manufacturing and Serial Production

The 1000-piece bulk pack is intended for companies with continuous consumption of sealing components.

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: 30 mm

Cross Section: 3 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 key 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 in industrial environments

The 70 Shore A hardness offers an excellent balance between flexibility, durability and sealing efficiency.

Applications in Hydraulic and Pneumatic Systems

The O-Ring 30x3 mm NBR 70 Shore A is widely 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 stability makes it suitable for demanding static and dynamic sealing applications.

Benefits of Bulk Packaging

The 1000-piece package provides important operational benefits:

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

Bulk packaging improves supply chain efficiency while helping manufacturers maintain continuous production.

Warehouse Stock and Logistics

Maintaining a permanent inventory of frequently used O-rings is essential for efficient manufacturing.

The 1000-piece package is recommended for:

• Production warehouses
• OEM manufacturing
• Industrial maintenance departments
• Spare parts inventory
• Industrial distributors
• Technical service companies

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

Why Engineers Choose NBR O-Rings

Engineers rely on NBR O-rings because they provide:

• Excellent resistance to oils and greases
• High abrasion resistance
• Standard 70 Shore A hardness
• Consistent dimensional accuracy
• 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 requiring continuous availability of sealing components for production and assembly.

Is this O-ring suitable for hydraulic systems?

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

Can it be used in pneumatic applications?

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

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 direct sunlight, ozone and excessive 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 manufacturing processes.

Is 70 Shore A the standard hardness for industrial sealing?

Yes. It is the most commonly specified hardness for hydraulic, pneumatic and general industrial sealing 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 designed for industrial production, OEM manufacturing and high-volume users. Workshops and maintenance departments requiring smaller quantities should select the 100-piece package.