O-Ring 9.25x1.78 NBR 70 Shore A

What Is the O-Ring 9.25x1.78 NBR 70 Shore A 100 pcs?

The O-Ring 9.25x1.78 mm NBR 70 Shore A (100 pcs) is a technical sealing solution designed primarily for maintenance departments, repair workshops, hydraulic service companies and machine servicing. 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 and lubricating greases. The 100-piece pack is intended for regular maintenance and repair work rather than high-volume industrial production.

Designed for Workshops and Maintenance

The 100-piece package is an excellent choice for companies that perform routine servicing and equipment repairs.

Typical users include:

• Mechanical workshops
• Hydraulic repair services
• Pneumatic maintenance companies
• Industrial maintenance departments
• Field service technicians
• Machine repair specialists
• Installation contractors
• Equipment maintenance teams

It provides a practical inventory without the need to store industrial bulk quantities.

Technical Specification

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

Hardness: 70 Shore A

Inside Diameter: 9.25 mm

Cross Section: 1.78 mm

Profile: O-Ring

Colour: Black

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

Chemical Resistance:

• Mineral oils
• Lubricating greases
• Hydraulic fluids
• Many petroleum-based industrial fluids

Packaging: 100 pieces

Applications in Service and Repair

The O-Ring 9.25x1.78 mm is commonly used during:

• Hydraulic pump repairs
• Valve servicing
• Cylinder maintenance
• Hydraulic system repairs
• Pneumatic equipment servicing
• Preventive maintenance
• Machine overhauls
• Replacement of worn sealing components

It is a practical sealing component for everyday maintenance operations.

Why Choose NBR 70 Shore A?

NBR is the standard elastomer used for general industrial sealing applications.

Its main advantages include:

• Excellent resistance to mineral oils
• Good compatibility with lubricating greases
• Good resistance to hydraulic fluids
• High abrasion resistance
• Good mechanical strength
• Reliable sealing performance
• Easy installation

The 70 Shore A hardness provides an ideal balance between flexibility and durability.

Benefits of the 100-Piece Package

A 100-piece pack offers several practical advantages:

• Convenient stock level for workshops
• Reduced purchasing frequency
• Lower cost per seal compared to individual pieces
• Easy storage and inventory management
• Immediate availability for repairs
• Suitable for routine maintenance schedules

Unlike industrial bulk packaging, this quantity is optimized for service operations and regular maintenance work.

How to Select the Correct O-Ring

Before installation, verify:

• Inside diameter
• Cross-section diameter
• Material compatibility
• Operating temperature
• Working fluid
• Groove dimensions
• Operating pressure

Proper sizing ensures reliable sealing performance and long service life.

Frequently Asked Questions (FAQ)

Is a 100-piece pack suitable for a repair workshop?

Yes. It provides an ideal quantity for routine servicing and regular maintenance without requiring bulk industrial inventory.

Is NBR compatible with hydraulic oil?

Yes. NBR performs very well with most mineral oil-based hydraulic fluids.

Can this O-ring be used in pneumatic systems?

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

Are larger package sizes available?

Yes. Bulk packaging options are available for OEM manufacturers and industrial production facilities.

How should NBR O-rings be stored?

Store them in a cool, dry place away from direct sunlight, ozone and excessive heat.

Frequently Asked Questions from Service Engineers

Is this size commonly used for hydraulic maintenance?

Yes. It is frequently used in servicing hydraulic components and fluid power equipment.

Are the O-rings ready for installation?

Yes. They are supplied ready for immediate installation without additional preparation.

Is NBR suitable for repeated service cycles?

Yes. NBR provides reliable performance in standard industrial maintenance applications.

Is it practical to keep this size in workshop inventory?

Yes. Maintaining stock of frequently used O-rings helps reduce repair time and improve service efficiency.

Is the 100-piece pack intended for serial production?

No. This package is specifically intended for maintenance, repair workshops and service operations. Industrial manufacturers with higher consumption are generally better served by the 1000-piece bulk pack.